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[Correlation of FDG-PET and MRI/CT with histopathology in primary diagnosis, lymph node staging and diagnosis of recurrency of head and neck cancer].

AIM: Correct staging of head and neck cancer is important for the patient's prognosis and further therapeutic strategies. Aim of the present study was to investigate the diagnostic value of FDG-PET regarding the pre-surgical diagnosis of primary tumor and cervical lymph node metastases, the diagnosis of tumour recurrence, and the localisation of unknown primary, further to compare the results to those of morphological imaging modalities (CT/MRI) and to correlate the results of both methods with histopathological findings. PATIENTS/METHODS: 115 patients (pts) (72 x primary diagnosis, 37 x recurrence, and 6 x unknown primary) underwent FDG-PET (ECAT EXACT HR+) and CT or MRI. Results were correlated with histopathological findings in terms of detection of primary and recurrent tumors as well as lymph node metastases. RESULTS: Regarding the pre-surgical diagnosis, sensitivity and specificity for identifying primary tumors were 85 % and 100 % for PET and 88 % and 75 % for CT/MRI, respectively. Accuracy was 86 % for PET and 87 % for CT/MRI. Sensitivity and specificity for detecting primary lymph node involvement were 71 %/86 % for PET and 74 %/57 % for CT/MRI, resulting in an accuracy of 77 % with PET and 68 % with morphological imaging. In 23 pts histopathology revealed pT1 stages with tumor diameters < 12 mm. In 8 pts CT/MRI and in 10 pts PET failed to identify these small primary lesions. Detecting tumor recurrence (n = 37) PET showed a higher sensitivity (83 %), specificity (76 %) and accuracy (78 %) compared to CT/MRI (sensitivity: 67 %; specificity: 52 %; accuracy: 57 %). In 4/6 pts with unknown primary, imaging was able to identify a primary lesion (3/4 in FDG-PET, 2/4 in CT/MRI), in 2/6 patients even in the follow-up no primary tumor was found. CONCLUSIONS: FDG-PET provides only minor additional information to morphological imaging concerning diagnosis of primary tumors. At a similar level of sensitivity, however, it seems to be more specific regarding the lymph node involvement. PET seems to be superior to CT/MRI in detecting tumor recurrence as well as occult primary tumors in pts with known cervical lymph node metastases.

Adult↗

[Diagnosis and differential diagnosis of heart tumors in infancy and childhood].

The clinical features of 10 children, in whom the diagnosis of a cardiac tumor has been made, are reviewed. There were nonspecific systolic murmurs in 9 patients, depression of the S-T segment in the ECG of 7 children, and premature extrasystoles or supraventricular tachycardia in 4 children. X-ray always showed mild to moderate enlargement of the heart, but an abnormal contour could be detected only in 2 of the patients. While findings of cardiac catheterization were unspecific, the diagnosis could be made angiographically in 8 cases. Invasive studies, however, are now only indicated, if a proper diagnosis cannot be made by means of echocardiography. The diagnosis should be suspected in children with a nonspecific murmur, cardiomegaly and ECG-changes. Usually the diagnosis of a cardiac tumor is an indication for operation.

Cardiac Catheterization↗

Value of prenatal diagnosis and early postnatal diagnosis of congenital toxoplasmosis: retrospective study of 110 cases.

We reviewed the files of 110 women with Toxoplasma seroconversion during pregnancy. Prenatal diagnosis was attempted for 94 women by amniotic fluid sampling. Toxoplasma gondii was detected by PCR, with or without tissue culture and mouse inoculation. The early neonatal diagnostic procedure included placental testing by PCR and/or mouse inoculation, cord blood serological testing, and comparison of maternal and newborn antibodies by Western blotting (WB). Serological follow-up of the infants was conducted during the first year of life or until the diagnosis of congenital toxoplasmosis (CT) could be ruled out. Congenital infection was diagnosed in 27 individuals (20 live births) in the prenatal and/or neonatal period. The sensitivity and specificity of prenatal diagnosis were 81 and 100%, respectively. Placental examination was positive for 66.7% of individuals with CT and was always negative for neonates without CT. Cord blood serology detected immunoglobulin M (IgM) and/or IgA in 80% of infected newborns, with respective specificities of 91.2 and 87.7%. By WB we detected bands on IgG and IgM blots recognized by the newborn serum but not by the maternal serum (neosynthesized IgG and/or IgM) for 88.2% of infected infants within the first 2 months of life with a specificity of 100%. Early postnatal diagnosis was negative for 2 of the 20 neonates with CT. Both of these newborns had a negative prenatal diagnosis and were asymptomatic, suggesting a very low parasite load. In conclusion, despite the use of advanced methods, some cases of congenital toxoplasmosis cannot be detected early, which underlines the importance of careful follow-up of newborns who are at risk.

Animals↗

A survey comparing TCM diagnosis, health status and medical diagnosis in women undergoing assisted reproduction.

INTRODUCTION: For many women, undergoing assisted reproductive technology can be a difficult experience, and can result in changes in physical and emotional health and wellbeing. Recent research has suggested that acupuncture may be helpful for women undergoing assisted reproductive technology. To date, there is no information describing the traditional Chinese medicine (TCM) syndromes seen in women undergoing assisted reproductive technology, or relationships between TCM and Western medicine diagnoses. OBJECTIVE: To examine the health status of women undergoing assisted reproductive technology from both Western and Chinese medicine perspectives. METHODS: One hundred and eighty women were included in the study. All underwent a TCM diagnosis, 177 (98.3%) completed the quality of life questionnaire SF36. Information about Western medicine diagnosis was collected from case notes and was available for 176 (97.7%) women. RESULTS: Women in the trial reported poorer health on several domains of the SF36 compared with the South Australian population. The most common TCM diagnosis was 'Kidney Yang deficiency', diagnosed for 53.9% of patients. A TCM diagnosis of Qi or 'Blood stagnation' was associated with poorer quality of life on the mental health, emotional role function and social function domains of the SF36. No associations were found between TCM diagnosis and physical or general health components of the SF36. CONCLUSIONS: Associations between TCM and reproductive health diagnoses were demonstrated. Emotional health and wellbeing is an important aspect of patient care that needs to be addressed in clinical practice and research studies, as the findings suggest that this aspect of their health is often poorer during assisted reproductive technology.

Adult↗

Audit of the histopathological diagnosis of non-neoplastic colorectal biopsies: achievable standards for the diagnosis of inflammatory bowel disease.

AIM: To assess the performance of a histopathology department in diagnosing inflammatory bowel diseases with comparison of reports from other centres. STUDY POPULATION: 1067 sets of endoscopic biopsies received in the department of histopathology, Royal Hallamshire Hospital, 1990-1995. METHODS: The histopathological diagnosis of non-neoplastic endoscopic colorectal biopsies was audited using data from histopathology reports. The biopsy diagnosis by the initial reporting pathologist and final diagnosis after additional investigations (endoscopy, radiology, microbiology) or surgery were used to derive sensitivity, specificity, and positive predictive values for categories of disease. RESULTS: Diagnosis was validated for 1067 biopsy sets (43% of those initially assessed). For all biopsies (with or without active inflammation) reports highly suggestive or suggestive of Crohn's disease had a sensitivity of 50%; for ulcerative colitis the comparable figure was 62%. Sensitivity was the same for both diagnoses (74%) in those biopsies with active inflammation. Positive predictive values for highly suggestive diagnoses of ulcerative colitis or Crohn's disease were 100%. In all biopsies the specificity of a histopathological diagnosis of normality was 96%. CONCLUSIONS: These results compare favourably with the other published audits and present an achievable level of performance for non-specialist hospitals with non-specialist histopathology services.

Adolescent↗

The diagnosis and differential diagnosis of endogenous Cushing's syndrome.

Cushing's syndrome (CS) is a physically and psychologically disabling disease associated with high morbidity resulting from inappropriate elevation of circulating free cortisol levels. The main features of CS are disturbance of the normal circadian rhythm of cortisol secretion, impairment of the normal feedback of the hypothalamo-pituitary-adrenal (HPA)-axis, and excessive integrated 24 hours cortisol secretion. All biochemical tests used for the diagnosis of CS rely upon the ascertainment of a disturbance of these features. However, the diagnosis of CS (endogenous hypercortisolism) still remains a challenge, although the evolution of several diagnostic tests has allowed diagnosis at an earlier stage. In the initial investigation of CS, tests of high sensitivity are required to identify patients at risk, which are followed by tests of high specificity to confirm the diagnosis and establish the precise aetiology. This review will discuss the various causes of endogenous CS and focus on established and evolving diagnostic procedures used for its diagnosis, as several studies with large number of patients have recently appeared in the literature validating current practice and proposing improved diagnostic algorithms.

Adrenocorticotropic Hormone↗

[Transesophageal intraluminal ultrasonography in diagnosis and differential diagnosis of esophageal leiomyoma].

OBJECTIVE: To evaluate the diagnostic and differential diagnostic values of transesophageal echo probe (TEEP) or endoscopic ultrasonography (EUS) in the diagnosis and differential diagnosis of esophageal leiomyoma. METHODS: Between September 1996 and August 2000, TEEP or EUS was used among 23 patients with esophageal submucosal tumor and 11 patients with esophagus constricted from outside, among which 32 cases underwent CT too. All the patients except and 3 with constriction by aorta underwent surgical treatment. RESULTS: (1) The accuracy rate of diagnosis of esophageal leiomyoma by TEEP or EUS was 95.7% (22/23) in comparison with that by CT of only 42.9% (9/21, chi(2) = 14.69, P = 0.0196). (2) In the 11 patients with esophagi constricted by masses beyond or around esophagus, TEEP or EUS definitely differentiated the damage beyond or around esophagus from esophageal leiomyoma. CONCLUSION: Transesophageal intraluminal ultrasonography (TEEP and EUS) is a reliable method for the preoperative diagnosis and differential diagnosis of esophageal leiomyoma and is more accurate than CT.

Adult↗

[Sonographic diagnosis and differential diagnosis of neck cysts].

We report 101 patients with the clinical diagnosis of a branchial cyst investigated by ultrasonography. In 78 cases the diagnosis of a branchial cyst was confirmed by the ultrasound findings. The picture of a typical cyst was found in 26 cases, whereas a complex cyst filled with sludge or debris was found in 52 patients. Histology revealed a different diagnosis in 7 cases of ultrasonic complex cysts. Of 23 patients where a branchial cyst was excluded by ultrasound, histology showed a lesion other than a branchial cyst in 19 cases. In total, only 34.6% of the histologically confirmed branchial cysts displayed the typical signs of such a cyst on ultrasonography. However, in 91% of the patients with an actual branchial cyst we were able to confirm the diagnosis by ultrasound before operation. The differential diagnosis of other benign and malignant lesions of the neck resembling branchial cysts is discussed with examples.

Branchioma↗

[Morphology of neuroblastoma. Light and electron microscopic studies as a contribution on diagnosis and differential diagnosis].

The neuroblastoma is one of the most frequent malignant solid tumors in childhood and is thus of great practical importance. The origin of neuroblastoma cells from neural crest derivatives is generally accepted now, and this histogenesis explains some biochemical and morphological characteristics of the tumor. The cytological and histological features of neuroblastomas can be rather varying and, therefore, the diagnosis and differential diagnosis may be difficult. Our study presents the findings of 48 neuroblastomas after light microscopic examination and the ultrastructural characteristics of 8 neuroblastomas and 1 ganglioneuroma. At light microscopic level, completely undifferentiated neuroblastomas and tumors with variable degrees of differentiation were identified. The differentiation of the tumor tissue to ganglion cell-like elements was indicated by an increasing amount of cellular cytoplasm with development of a cytoplasmic process as well as an alteration of the picture of the nucleus (nuclear enlargement and a clearly visible nucleolus). Differentiation to Schwann cell-like elements was occasionally observed, too. Electron microscopically, in all tumors neurosecretory granules could be recognized, and in the better differentiated areas neurite-like cytoplasmic projections were detectable. Thus, the electron microscopy can be a valuable aid in establishing an unequivocal diagnosis. The histology of neuroblastomas is said to be of prognostic significance. Therefore, grading schemes of malignancy were developed. At present, the grading procedure after Hughes and coworkers is mostly used. The criteria of this grading system are presented and interpreted. Finally, those tumors are briefly characterized which play the main role in the differential diagnosis, i.e. juvenile rhabdomyosarcomas, Ewing's sarcoma (including the extraskeletal type), lymphoblastic lymphoma and histiocytic reticulosarcoma. The most important clinicopathologic differences in comparison to neuroblastomas are referred to. Using a large scale of morphologic methods as well as considering clinical and paraclinical parameters, the exact diagnosis of neuroblastoma should be possible in nearly every case.

Adolescent↗

Comparison of the use of standardized diagnostic criteria and intuitive clinical diagnosis in the diagnosis of common viral warts (verrucae vulgaris).

OBJECTIVE: To assess the diagnostic value of standardized diagnostic criteria compared with the clinical intuitive diagnosis for verrucae vulgaris. DESIGN: A blind comparison with cross-over of experienced dermatologists using either intuitive clinical diagnosis or else recording the presence of standardized diagnostic criteria in verrucae vulgaris. SETTING: Clinical outpatient department in a major teaching hospital. PATIENTS: Fifteen patients aged 6 to 60 years with 21 verrucae vulgaris and 24 control lesions. INTERVENTION: Dermatologists examined the lesions and recorded either the diagnosis by the usual clinical intuitive method or else whether standardized diagnostic criteria were present in the lesion of each patient. Each dermatologist did 1 only of the 2 methods for each lesion with the other doing the alternative method for the same lesion, neither of them having previously been aware of any of the diagnoses. MAIN OUTCOME MEASURE: The sensitivity, specificity, and positive predictive, negative predictive, and relative values for each diagnostic approach were compared. RESULTS: Use of intuitive clinical diagnosis resulted in 100% specificity, sensitivity, and positive predictive, negative predictive, and relative values for both the verrucae vulgaris and the control lesions. Recording the presence of the diagnostic criteria reduced to a varying extent all the parameters of diagnostic accuracy with site--fingers and hands, elbows, and knees--being the most efficacious of the criteria. CONCLUSIONS: These data indicate that care is required in relying too much on standardized criteria as the basis for clinical diagnosis, even for a lesion as simple as a wart. They also reinforce the value of clinical experience obtained from repeated exposure to multiple variants of a disease in the traditional bedside teaching model.

Adolescent↗

Diagnosis of influenza in the community: relationship of clinical diagnosis to confirmed virological, serologic, or molecular detection of influenza.

BACKGROUND: Successful treatment of influenza depends on an accurate diagnosis of the illness and prompt intervention. However, there is a lack of data comparing clinical diagnosis vs laboratory diagnostic techniques. OBJECTIVE: To compare the clinical diagnosis of community cases of influenza with various laboratory diagnostic techniques including multiplex, reverse transcription polymerase chain reaction. METHODS: Clinical diagnosis, viral isolation, hemagglutinin inhibition serology, and multiplex, reverse transcription polymerase chain reaction were used to diagnose influenza in patients enrolled in international phase 3 studies designed to investigate the efficacy and safety of an anti-influenza drug (inhaled zanamivir). Patients clinically diagnosed with influenza were enrolled at centers across North America and Europe. RESULTS: A total of 791 (77%) of 1033 patients with laboratory results from all 3 methods were confirmed positive for influenza by 1 or more test results. For 692 patients (67%), the results of all 3 tests agreed. Total symptom scores at baseline showed a significant association toward greater severity of symptoms with an increasing number of positive test results (P<.001). An increasing number of positive test results also showed a significant correlation with a longer time to alleviation of symptoms of influenza in the placebo group (P =.001). CONCLUSIONS: During a time when influenza was known to be circulating and clinical diagnostic criteria were applied, diagnosis of influenza in these trials was accurate in approximately 77% of adults on clinical grounds alone. This highlights the need for primary care physicians to be alerted to circulating influenza and to be aware that presentation with cough and fever provide the most predictive symptoms.

Administration, Inhalation↗

Contribution of transmission electron microscopy to fine-needle aspiration biopsy diagnosis: comparison of cytology and combined cytology and transmission electron microscopy with final histological diagnosis.

This report evaluates 74 fine-needle aspiration biopsies processed for transmission electron microscopy with subsequent surgical procedure. The specificity of diagnosis obtained by cytology alone was compared to that obtained by cytology and electro microscopy, using histologic diagnosis as the gold standard. When cytology gave a diagnosis of malignancy but could not give tumor category or type, electron microscopy could correctly give both. When cytology could give tumor category but not type, electron microscopy correctly identified type in the majority of cases. When cytology gave tumor category and type, electron microscopy confirmed the diagnosis. Transmission electron microscopy is very helpful when the cytopathologist can diagnose malignancy but cannot give tumor category and/or type. When the cytopathologist is specific in his/her diagnosis, TEM is not as helpful.

Adenocarcinoma↗

The effects of symptoms and delay in seeking diagnosis on stage of disease at diagnosis among women with cancers of the ovary.

This study evaluated characteristics of symptoms, their perceived cause, and delay in seeking a diagnosis associated with stage, grade, and histologic features of disease at diagnosis among incident cancer cases of the ovary (N = 83) identified in the Iowa National Cancer Institute-Surveillance, Epidemiology, and End Results population-based cancer registry. Contrary to clinical impressions, most early-stage cancers produced symptoms and were more likely than late-stage cancers to cause fatigue and urination problems; however, only irregular menstrual cycles were more likely to convince these patients with early-stage cancers to seek a diagnosis. Late-stage cases were most often accompanied by abdominal pain and swelling, but only pain was likely to convince women to seek a diagnosis. There was no association between delay, perceived cause, or seriousness of symptoms with stage of disease at diagnosis. Women, particularly those with a medical history of high risk factors, should be made aware that apparently benign disease symptoms are characteristic of early ovarian cancer and that this tumor can be found early if they seek medical attention immediately.

Abdomen↗

Transferring diagnosis versus actual diagnosis at a center for thoracic aortic disease.

BACKGROUND: Lack of physician awareness of thoracic aortic disease has received increased media attention. As a referral center for thoracic aortic disease our institutional experience confirms discrepancies between the transferring diagnosis and the actual pathologic diagnosis. A retrospective review was undertaken to identify the incidence and sources for disparate diagnoses. METHODS: Medical records from 100 consecutive patients transferred to The University of Florida--Shands Hospital between April 2002 and October 2003 were reviewed. To identify sources for error, the charts of 24 patients with diagnostic discrepancies were examined in detail with attention to outside radiologic reports, level of physician experience, and additional diagnostic testing required. RESULTS: The transferring diagnosis of 24 patients was different from the final aortic pathologic disease. The most common discrepancies were misclassifications of dissections and aneurysms. Seven patients had either no leak or no dissection. Two patients had misleading "pulsation artifacts" on their computed tomographic scans. In half of the patients diagnostic differences were secondary to initial misinterpretation by the referring radiologist. Seventeen of 24 patients underwent additional diagnostic testing. Misdiagnoses were more common when the referring physician was not a surgeon (15 of 24). The diagnosis of 5 patients was confirmed only in the operating room. CONCLUSIONS: A significant incidence of disparate diagnosis was identified between transferring facilities and our referral center. Discrepancies were secondary to initial radiographic misinterpretation and the complexity of thoracic aortic pathologic disease. Medical schools and continuing medical education programs should place increased emphasis on thoracic aortic disease in their curricula.

Adolescent↗

A comparison of manual diagnosis with a diagnosis established by a uni-level lumbar spinal block procedure.

The study was designed to test if a manipulative therapist (MT) using manual examination techniques alone or when accompanied by a verbal response from the subject as to the pain produced, could diagnose the lumbar segmental level responsible for a subjects low back pain and referred pain. The study consisted of prospective and retrospective parts where the MTs manual diagnosis of the symptomatic lumbar segmental level was compared to a segmental level diagnosis attained by subsequent or previous spinal anaesthetic blocks. In the prospective part of the study the MT's manual diagnosis was 94.12% and 52.9% sensitive in detecting the symptomatic lumbar segmental level with verbal and non-verbal subject responses, respectively. In the retrospective part of the study the MTs manual diagnosis was found to be 60.86% and 47.82% sensitive in detecting the symptomatic lumbar segmental level with verbal and non-verbal subject responses, respectively. In the prospective study the MT's manual diagnosis showed 100% and 80% specificity in detecting subjects with no history of low back pain with verbal and non-verbal subject responses, respectively, and 100% and 75% specificity in the retrospective study with verbal and non-verbal subject responses, respectively. Inter-therapist reliability analysis for the recording of passive physiological intervertebral movements (PPIVMs), passive accessory intervertebral movements (PAIVMs) and 'tissue response' showed percentage agreement rates ranging from 55% to 99%; 74% to 100% and 43% to 100%, respectively, with weighted kappa values ranging from -0.11 to 0.32; -0.15 to 0.24 and kappa values ranging from -0.16 to 0.28, respectively. This study demonstrates that a MT's manual examination when accompanied by a verbal subject response, is highly accurate in detecting the lumbar segmental level responsible for a subjects complaint.

Journal Article↗

Medicare payments from diagnosis to death for elderly cancer patients by stage at diagnosis.

Although extensive resources go to cancer care, national population-based data on the costs of such care at the patient level have been unavailable. Medicare payments subsequent to diagnosis of cancer for elderly enrollees with five common cancers were estimated using tumor registry data from the Surveillance, Epidemiology, and End Results Program linked to Medicare claims from 1984 to 1990. The time between diagnosis and death was divided into four phases corresponding to the clinical course of solid tumors, average payments for each phase were estimated (including payments for services not related to cancer), then phase-specific payment data were aggregated. Average payments by phase varied among cancer sites, especially in the initial care phase, where payments were highest for lung and colorectal cancers ($17,500 in 1990 dollars) and lowest for female breast cancer ($8,913). Total Medicare payments from diagnosis to death were highest for persons with bladder cancer ($57,629) and lowest for those with lung cancer ($29,184). Low payments for persons with lung cancer corresponded to brief survival times. Persons diagnosed at earlier stages incurred higher total payments between diagnosis and death than those diagnosed at later stages, reflecting their longer survival. This implies that early detection may increase total Medicare expenditures by extending beneficiaries' lives. However, Medicare payments per year of survival were lower for earlier stages. Data on Medicare payments subsequent to diagnosis of cancer are useful for identifying the cost implications of differences in treatment patterns by demographic characteristics, geography, and delivery systems; comparing the financial impact of alternative therapies; evaluating the long-term cost impacts of screening and prevention programs; and risk-adjusting payments to health plans.

Aged↗

Diagnosis: to biopsy or not to biopsy: assessing the role of surgical lung biopsy in the diagnosis of idiopathic pulmonary fibrosis.

Idiopathic pulmonary fibrosis (IPF) is a chronic disorder that is associated with a poorer prognosis than subacute idiopathic interstitial pneumonias (IIPs). IPF can be differentiated from other IIPs on the basis of its histologic pattern of usual interstitial pneumonia (UIP). Although a surgical lung biopsy specimen showing a UIP pattern is required for the definitive diagnosis of IPF, clinical criteria can be used in the absence of a lung biopsy specimen to make a likely diagnosis of IPF. The predictive value of these criteria largely depends on the expertise of the clinician and radiologist, but considerable interobserver variability exists even when evaluations are performed by experts in the field. Moreover, these criteria lead to misdiagnosis in about 25 to 35% of cases. Interobserver variability is reduced and diagnostic accuracy is improved in cases in which a diagnosis is made with a high degree of confidence. Diagnostic accuracy is also higher when the diagnosis is made by a core group of experts rather than by a referring center. The decision on whether or not to perform a surgical lung biopsy is difficult. It is clearly indicated in cases in which clinical or radiologic findings are atypical or when the diagnosis is made with a low degree of certainty.

Biopsy↗

The accuracy of intraoperative cytopathological diagnosis compared with conventional histopathological diagnosis.

To determine the accuracy of intraoperative cytopathological diagnosis compared with conventional histopathological diagnosis, the authors obtained 100 specimens from masses of various organ systems chosen randomly from 65 dogs, 30 cats, and five exotic animals. Of the 100 specimens, a specific diagnosis was obtained in 42%, the correct pathological process (i.e., mesenchymal neoplasia, epithelial neoplasia, round cell neoplasia, or inflammation) was identified in 41%, in 1% the diagnosis was deferred, and in 16% an incorrect diagnosis was obtained. The overall accuracy rate of intraoperative cytopathological examination was 83%, which increased to 90% by the exclusion of splenic masses. The accuracy rate of diagnosing neoplasia was 87%, with a sensitivity of 89% and a specificity of 100%. Intraoperative cytopathological examination is an accurate diagnostic method with good sensitivity and specificity for the identification of neoplasia.

Animals↗