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PubMed2003

[Primary adenocarcinoma of the small intestine].

Three patients, a woman aged 46 years and two men aged 81 and 62 years, presented with abdominal pain, nausea, vomiting and/or weight loss. A small intestine follow-through series revealed a significant stenosis in all 3 patients. A laparotomic partial resection of the affected jejunum and corresponding mesentery was performed. A primary adenocarcinoma of the small intestine was diagnosed; pathology revealed that the resections were radical, and pT3N0, pT2N0 and pT3N0 stage tumours respectively. The first patient underwent a repeat operation four months later due to similar complaints caused by a tumour recurrence; fifteen months later she died from recurrent disease. The second patient was disease-free 3 years after surgery. In the third patient, liver and peritoneal metastases developed 16 months after surgery; he died 10 months after palliative chemotherapy had been initiated. Adenocarcinoma of the small intestine is a rare disease and patients often present late with aspecific complaints. This, combined with the fact that these tumours tend to follow an aggressive course, results in a poor five-year survival rate of 10-35%. Surgery is the only curative treatment currently available. A greater awareness of this type of tumour is needed for treatment results to improve.

Abdominal Pain↗

PubMed1993

Preoperative evaluation of inferior vena cava involvement secondary to malignant abdominal neoplasms.

The authors report their experience of different imaging techniques (US, CT, MRI, and cavography) used to evaluate inferior vena cava involvement due to abdominal malignant neoplasms. The study is a retrospective analysis of preoperative data on 15 patients of both sexes in comparison with intraoperative and/or pathological findings. All patients underwent ultrasonography, with good results in all the venous segments studied, as for the CT scan; the limitation of both techniques is the unsafe evaluation of venous wall involvement when the neoplastic tissue is confined inside the vessel. The results obtained using MRI seem to be very encouraging, but we only studied three cases with this technique, and so cannot assess the real value of the method. In nine patients we performed inferior cava phlebography: we believe this to be a very reliable exam to demonstrate vessel wall invasion, even if it is a very invasive procedure, its limits being the inability to observe proximal thrombotic extension when the vein is completely obstructed by the tumor. On the basis of their experience the authors suggest a multi-technique imaging diagnostic procedure for preoperative staging with a view to obtaining as much information as possible to correctly program surgical procedure.

Abdominal Neoplasms↗

PubMed2001

Hybrid 3D visualization of the chest and virtual endoscopy of the tracheobronchial system: possibilities and limitations of clinical application.

OBJECTIVE: A hybrid rendering method which combines a color-coded surface rendering method and a volume rendering method is described, which enables virtual endoscopic examinations using different representation models. MATERIALS AND METHODS: 14 patients with malignancies of the lung and mediastinum (n=11) and lung transplantation (n=3) underwent thin-section spiral computed tomography. The tracheobronchial system and anatomical and pathological features of the chest were segmented using an interactive threshold interval volume-growing segmentation algorithm and visualized with a color-coded surface rendering method. The structures of interest were then superimposed on a volume rendering of the other thoracic structures. For the virtual endoscopy of the tracheobronchial system, a shaded-surface model without color coding, a transparent color-coded shaded-surface model and a triangle-surface model were tested and compared. RESULTS: The hybrid rendering technique exploit the advantages of both rendering methods, provides an excellent overview of the tracheobronchial system and allows a clear depiction of the complex spatial relationships of anatomical and pathological features. Virtual bronchoscopy with a transparent color-coded shaded-surface model allows both a simultaneous visualization of an airway, an airway lesion and mediastinal structures and a quantitative assessment of the spatial relationship between these structures, thus improving confidence in the diagnosis of endotracheal and endobronchial diseases. CONCLUSIONS: Hybrid rendering and virtual endoscopy obviate the need for time consuming detailed analysis and presentation of axial source images. Virtual bronchoscopy with a transparent color-coded shaded-surface model offers a practical alternative to fiberoptic bronchoscopy and is particularly promising for patients in whom fiberoptic bronchoscopy is not feasible, contraindicated or refused. Furthermore, it can be used as a complementary procedure to fiberoptic bronchoscopy in evaluating airway stenosis and guiding bronchoscopic biopsy, surgical intervention and palliative therapy and is likely to be increasingly accepted as a screening method for people with suspected endobronchial malignancy and as control examination in the aftercare of patients with malignant diseases.

Adult↗

PubMed2006

Surgery for pulmonary venous obstruction after repair of total anomalous pulmonary venous return.

The major complication and the main cause of reoperation following surgery for total anomalous pulmonary venous return (TAPVR) is the occurrence of pulmonary venous obstruction. Outcomes after surgical repair of TAPVR have greatly improved in the last 10 years; however, the complex forms of TAPVR, particularly when associated with single ventricle and heterotaxy, still carry a high risk of failure. The pathology of pulmonary venous obstruction following TAPVR surgery is a fibrous intimal hyperplasia associated with some medial hypertrophy. There is an increasing severity in the spectrum of lesions from anastomotic stricture to pulmonary vein ostial stenosis and diffuse pulmonary vein stenosis. For anastomotic lesions, revision of the TAPVR anastomosis by patch enlargement of the left atrial anastomosis provides good results. On the contrary, conventional techniques in cases of pulmonary vein ostial stenosis had very poor results. The sutureless repair technique introduced in 1996 provides better midterm results than any other technique, with freedom from mortality and recurrence improving from 65% to 90%. The sutureless technique is described in detail, with emphasis on the need for resection of the pulmonary vein scar tissue and on the different techniques needed respectively on the right and the left side. In our experience, using an atraumatic technique at the initial repair has greatly decreased the occurrence of late pulmonary venous obstruction.

Anastomosis, Surgical↗

PubMed2000

[Better understanding of atheromatous ischemic renal vascular disease].

Atheromatous ischaemic renal vascular disease (AIRVD) comprises ischaemic renal disease, atheromatous disease of the large arteries and intra-renal atheromatosis. Cholesterol emboli and lesions of nephroangiosclerosis are often associated, affecting the two kidneys. It is an increasingly common cause of chronic renal failure in an aging population, affecting 12 to 14% of new patients requiring dialysis in the United States. Atheromatous stenoses are very progressive with a risk of renal atrophy; they are a marker of polyvascular disease, often detected during other angiographic investigation. Hypertension secondary to the stenosis, still incorrectly called renovascular hypertension, is, however rare, affecting less than 0.5% of hypertensives. For economic reasons, it is important to select patients who need complementary investigation. In view of the absence of specific signs of the pathology, the "presumptive" diagnosis is based on a range of clinical and biological results, especially in a high risk context. The method of investigation varies from team to team, depending on the availability of equipment, the experience of the operators and the patient himself. Duplex Doppler, spiral angioscan and magnetic resonance angiography are the most pertinent investigations for the management of AIRVD. When the diagnosis of renal artery stenosis has been made, the problem of revascularisation, the objective of which is to preserve or restore the functional nephronic mass, has to be treated to prevent progression to end stage renal failure. Although epidemiological and physiopathological evidence is in favour of revascularisation, only renal salvage procedures are imperative. Apart from these indications, the clinical benefits of revascularisation have not yet been demonstrated. In all cases, the control of associated risk factors is essential to maintain the success of revascularisation and slow down the progression of atheromatous disease.

Constriction, Pathologic↗

PubMed2001

[Significance of anamnestic factors in the background of pathologic airway alterations].

The results of 867 diagnostic bronchoscopies, between August 1992 and August 1993, were studied by the retrospective analysis of the patients' files. The average age of the children was 46 months (6 days-25 years). The proportion of girls and boys were 38.6% and 61.4%. Data of the history were: therapy resistant recurrent wheezy bronchitis in 31.9%, recurrent pneumonia in 31.1%, stridor in 22.1%, recurrent croup in 17.4%, bronchial asthma in 10.1%, monosymptomatic cough in 9.5% and recurrent bronchitis in 8.0%. The 768 (89%) pathologic findings were: 1. by bronchoscopy (n = 867): acute inflammation of the mucous membrane 7.3%, chronic bronchitis 75.1%, mucous secretion 44.5%, purulent secretion 20.8%, cricoid stenosis 4.6%, tracheal stenosis 11.2%, left main stem bronchus stenosis 27.8%; 2. by bronchography (n = 202): bronchial deformation 43.1%, bronchiectasis 5.4%, gracile bronchi 2.0%. The following significant relations were proved between the anamnesis and the results of the bronchoscopy and/or bronchography by statistical analysis: recurrent wheezy bronchitis/chronic bronchitis (p < 0.001; chi 2 = 16.35), approximately/purulent secretion (p = 0.039; chi 2 = 4.26), approximately/left main stem bronchus stenosis (p < 0.001; chi 2 = 19.27); stridor/tracheal stenosis (p < 0.001; chi 2 = 58.67), approximately/left main stem bronchus stenosis (p < 0.001; chi 2 = 63.45), approximately/cricoid stenosis (p = 0.0015; chi 2 = 10.8), approximately/other stenosis (p = 0.002; chi 2 = 9.69); recurrent croup/cricoid stenosis (p < 0.001; chi 2 = 18.34); bronchial asthma/bronchial deformation (p = 0.026; chi 2 = 4.95). The results show the importance of the bronchological examination in the diagnosis of chronic chest symptoms in children.

Adolescent↗

PubMed2003

Currarino triad with dual pathology in the presacral mass: report of a case.

PURPOSE: Currarino triad, which comprises anorectal stenosis, anterior sacral defect, and a presacral mass, is an uncommon cause of constipation in children and adults. The presacral mass in this triad is most often caused by an anterior sacral meningocele, a teratoma, or an enterogenous cyst, but rarely may be caused by dual pathology. A neonate with Currarino triad and dual pathology in the presacral mass is described in this report. METHOD: A male Chinese neonate, who presented with abdominal distention and constipation on the second day of life, was found to have features of Currarino triad. Colostomy was done in the neonatal period, and the presacral mass was excised by posterior sagittal perineal approach at the age of six months. RESULTS: The excised presacral mass consisted of an anterior meningocele and a teratoma. The patient continued to have constipation during follow-up and required anorectoplasty to correct residual anorectal stenosis. At the time of this report the patient was three years old and growing normally with normal anorectal function. DISCUSSION: Of a total of about 200 cases of complete Currarino triad found in the literature, in only 22 patients did the presacral mass contain both meningocele and teratoma. The features of these 22 patients and the current views on the surgical management of Currarino triad are discussed.

Abnormalities, Multiple↗

PubMed1990

Neurologic complications of axillary and brachial catheter arteriography in atherosclerotic patients: predictive factors.

Catheter arteriography by the axillary or brachial route can be responsible for central neurologic complications. The objectives of this prospective study were to define the predictive factors of these complications and determine their incidence. This report is based on 288 consecutive arteriography sessions performed between January 1985 and June 1987. All patients had arterial atheromatous pathology. Ten central neurologic complications (3.5%) occurred, two of which (0.7%) were permanent. Four factors were significantly associated with increased incidence of central neurologic complications: antecedent transient ischemic attack (p less than 0.001); tight (greater than 80%) stenosis of at least one internal carotid artery (p less than 0.02); angina pectoris (p less than 0.05); age over 80 years old (p less than 0.001). Seldinger's or Dos Santos' techniques are preferable to axillary or brachial catheter techniques for investigation of the lower limbs and the abdominal aorta. The former obviates the need to catheterize the aortic arch and reduces the risk of embolism to the supraaortic arteries. Digital venous arteriography is an alternative to aortic arch catheterization when investigating the supraaortic arteries in the presence of risk factors.

Age Factors↗

PubMed2003

Evaluation of complications and results in a contemporary series of 300 consecutive radical retropubic prostatectomies with the anatomic approach at a single institution.

OBJECTIVES: To evaluate the complications and results of radical retropubic prostatectomy with the anatomic approach, at our center, to allow a comparison with published studies and precise patient counseling. METHODS: We reviewed the charts and records of the follow-up visits of all patients who consecutively underwent radical retropubic prostatectomy for clinically intracapsular prostate cancer between March 1997 and February 2002. RESULTS: The pathologic stage was pT0 in 4 patients (1.3%), pT2a in 83 (27.7%), pT2b in 116 (38.7%), pT3a in 52 (17.3%), pT3b in 38 (12.6%), and pT4 in the remaining 7 (2.4%). Extracapsular disease extension was present in 97 specimens (32.3%); it was associated with positive margins in 64 patients (21.3%). Intraoperative and postoperative complications were recorded in 19 patients (6.3%). Immediate surgical repair was necessary in 3 cases (1%) and delayed in 5 (1.7%). A stricture of the vesicourethral anastomosis was observed in 2 patients (0.7%). At a median follow-up of 29 months (range 6 to 57), a total of 262 patients (88.8%) was continent; 26 patients (8.8%) had stress incontinence, and 7 were incontinent (2.3%). Of 262 patients, 128 (48.2%) achieved continence within the first day of catheter removal. CONCLUSIONS: Radical retropubic prostatectomy is associated with low complication rates; with the anatomic approach, a limited incidence of incontinence is attainable, consistent with major referral centers.

Aged↗

PubMed1996

3D MR angiography with ramp-shaped flip-angle distribution.

This study addressed the use of 3D MR angiography with flip angles (FAs) linearly varying across the excitation volume in order to diminish spin saturation. The shape of the ramp profile was varied to optimize the method for different regions and pathological alterations. Radio frequency pulses with ramp-shaped excitation profiles were generated using Fourier transformation and integrated into a flow-compensated 3D-FISP sequence. With the use of ramp-shaped excitation profiles good results were obtained for intracranial arteries as well as for neck arteries (i.e. carotid and vertebral arteries) which were demonstrated in 6 healthy volunteers and in 5 patients with various stenoses and anomalies of the carotid and vertebral arteries. With this technique it was possible to use increased thicknesses of the excitation volume (slab) up to 256 mm. Ramp-shaped excitation pulses with linearly increasing FAs in main flow direction can provide improved contrast of the vessel parts located distally to the entry side of the slab. Although this method has no advantage concerning complex flow or other dephasing effects; its particular effectiveness lies in the reduction of spin saturation.

Aged↗

PubMed2000

[Pyeloureteral junction stenosis: our experience and review of the literature].

OBJECTIVES: To study patients with ureteropelvic junction obstruction treated in our department and a retrospective study of this pathology, focus our attention in the diagnosis and treatment. MATERIAL AND METHODS: 62 patients from 7 weeks to 68 years old (mean 29 +/- 1.9). Half of the patients were men and the other half women. In 30 patients the UPJ obstruction was on the right side and 32 patients was on the left side. RESULTS: The most frequent symptom was the flank pain (46.8%). To confirm the diagnosis, we had IVU in the 61.3% of the patients and ultrasound in the 38.7%. The treatment was the Anderson-Hynes pyeloplasty in the 96.8% of the patients. In 33 patients we used a ureteral catheter. The overall success rate was 90.3%. The 29% of the patients presented postoperative complications. CONCLUSIONS: Open pyeloplasty is the gold standard treatment of the UPJ obstruction in selected cases, mainly in children.

Adolescent↗

PubMed2000

Venous complications after orthotopic liver transplantation.

Complications involving the portal vein or the vena cava, are rare after orthotopic liver transplantation. We report on the incidence and treatment of venous complications following 1000 orthotopic liver transplantations in 911 patients. Twenty-six of the adult patients (2.7%) suffered from portal complications after transplantation, whereas complications of the vena cava were observed in only 17 patients (1.8%). Technical problems or recurrence of the underlying disease (e.g. Budd-Chiari syndrome) accounted for the majority of complications of the vena cava, whereas alteration of the vessel wall or splenectomy during transplantation could be identified as important risk factors for portal vein complications. In patients undergoing modification of the standard end-to-end veno-venous anastomosis of the portal vein due to pathological changes of the vessel wall, complications occurred in 8.3%, whereas only 2.4% of patients who received a standard anastomosis of the portal vein experienced complications of the portal vein. Furthermore, splenectomy during transplantation was also associated with an increased incidence of portal vein complications (10.5 vs. 2.2% in patients without splenectomy). Treatment was dependent on the signs and symptoms of the patients, and varied considerably between patients with portal vein complications and patients suffering from complications of the vena cava. Complications of the vena cava led to retransplantation in about one-third of the patients, whereas in patients with occlusion of the portal vein, retransplantation was necessary in only 15%, and more than half of the patients suffering from portal vein complications did not require any treatment at all. Usually, treatment of patients with portal vein complications only became necessary when additional complications such as arterial occlusion or bile duct injuries occurred.

Adult↗

PubMed2004

Intramyocardial arterial narrowing in dogs with subaortic stenosis.

Earlier studies have described intramyocardial arterial narrowing based on hyperplasia and hypertrophy of the vessel wall in dogs with subaortic stenosis (SAS). In theory, such changes might increase the risk of sudden death, as they seem to do in heart disease in other species. This retrospective pathological study describes and quantifies intramyocardial arterial narrowing in 44 dogs with naturally occurring SAS and in eight control dogs. The majority of the dogs with SAS died suddenly (n=27); nine had died or been euthanased with signs of heart failure and eight were euthanased without clinical signs. Dogs with SAS had significantly narrower intramyocardial arteries (P<0.001) and more myocardial fibrosis (P<0.001) than control dogs. Male dogs and those with more severe hypertrophy had more vessel narrowing (P=0.02 and P=0.02, respectively), whereas dogs with dilated hearts had slightly less pronounced arterial thickening (P=0.01). Arterial narrowing was not related to age, but fibrosis increased with age (P=0.047). Dogs that died suddenly did not have a greater number of arterial changes than other dogs with SAS. This study suggests that most dogs with SAS have intramyocardial arterial narrowing and that the risk of dying suddenly is not significantly related to the overall degree of vessel obliteration.

Age Factors↗

PubMed1989

[Initial experiences with hysterosalpingoscintigraphy in normal and pathologic fallopian tube passage].

A prospective study in 38 patients was designed to evaluate the efficacy and reliability of radionuclide hysterosalpingoscintigraphy (HSS) using 99mTc labelled human albumin macroaggregates (HAMA). Following application in the posterior vaginal fornix at the time of ovulation, HAMA normally migrate spontaneously through the uterus and tubes and may be identified after 20 min (range 5-90 min) in the uterine cavity and after 2 hrs (range 40 min - 3 hrs) in the free pelvis, using a gamma camera. When correlated with the findings of conventional contrast hysterosalpingography (HSG), the radionuclide procedure yielded comparable results in females with patent or clearly obstructed tubes. Using 8-10 MBq 99mTc, radiation exposure was estimated to be 0.75 cGy per ovary, which is considerably less than the mean dose absorbed with HSG. As the HSS procedure imitates the migration of spermatozoa by the means of an inert tracer, it allows a direct insight in the mechanisms of passive transport taking place in the uterus and tubes at the period of ovulation. Thus, it reflects the physiological state of the female reproductive tract. On the basis of the scintigraphic findings, equivocal results on HSG have to be re-evaluated, as tubes, which are anatomically patent under high pressure, may be functionally deficient.

Adult↗

PubMed1993

Diagnosis of high-grade stenosis of innominate artery.

Although pathology of the innominate artery (IA) is not frequent, it causes relevant impairment of extracranial circulation and sometimes cerebrovascular events. Definite differentiation of high-grade stenosis from occlusion of the IA has not been obtained until now with continuous-wave (C.W.) Doppler and duplex system ultrasound, and thus the direct evaluation of IA is not reliable by noninvasive methods. In this study the authors suggest an indirect method of evaluation of IA pathology based on the study of carotid, subclavian, and vertebral arteries (VA) with echo-Doppler-color-flow (EDCF) (with linear--phase array probes of 7.5 and 5 MHz). In the last two years they studied 6 patients with IA pathology (2 with occlusion (occ), 1 with stenosis of 80% and 3 with subocclusive stenosis > 90%). In both patients with occ, right VA flow was inverted, and also the right common carotid (CC) was involved (occ in 1 case and inverted flow in the other); in the 3 subocclusive stenoses a lowered systolic flow in the CC was recorded (48 vs 85 cm/sec, 41 vs 77, and 23 vs 109). In the 80% stenosis, besides the inverted flow in VA, only a reduced diastolic flow in CC was also recorded (19 vs 33 cm/sec measured in the left side). All patients with high grade stenosis were successfully confirmed by an angiographic study, including the different degree of stenosis. Five of the 6 patients underwent surgical correction with a restored flow in the previously involved artery. Only 1 patient with occlusion is waiting for surgical correction.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗

PubMed2003

A case report of CUAVD with azoospermia: a proposal of a rational diagnostic approach.

Since its introduction in 1992, intracytoplasmic sperm injection (ICSI) has made the treatment of severe male infertility possible, particularly that of azoospermia, both secretory and secretory. Some azoospermic subjects have a pathological development of the seminal pathways, and in particular of the vas deferens and/or ejaculatory ducts. A large part of these subjects show, like patients affected by cystic fibrosis, mutations in the cystic fibrosis transmembrane regulator (CFTR) gene. Some of these azoospermic subjects are indeed paucisymptomatic fibrosis cystic patients who bear the risk of transmitting cystic fibrosis, seminal pathways alterations and, possibly, renal malformations to their offspring. We describe a case of an infertile patient with right CUAVD and azoospermia previously treated by crossed epididimovasostomy in the absence of any genetic and an adequate anatomic evaluation. He was then found to be CFTR mutation positive and without demonstrable spermatozoa in the vesicular fluid despite ultrasound evidence of left ejaculatory duct obstruction. During the second TESA-ICSI cycle an ongoing pregnancy was obtained. An extensive genetic examination for CFTR mutations and a through anatomical study is, therefore, mandatory in these patients to select the most appropriate treatment in CFTR mutation positive and negative CUAVD patients.

Adult↗

PubMed1996

Swine model of coronary restenosis: effect of a second injury.

Looking for a coronary artery restenosis model closer to human pathology, a protocol of balloon injury/reinjury (plaque of dilatation) in swine coronary artery was designed. Pig coronary arteries (n = 24) were dilated for this study: 12, group 1, once (sacrifice at 10.0 +/- 2.2 weeks); 6, group 2, twice at 2-wk intervals (sacrifice at 5.2 +/- 0.2 wk); 6, group 3, twice at 4-wk intervals (sacrifice at 9.3 +/- 1.9 wk). A single overdilatation resulted in an eccentric neointimal hyperplasia representing half of the wall area (group 1, 45.6 +/- 5.1%). In animals (groups 2 and 3) subjected to redilatation, fracture length, ratio of fracture length to internal elastic lamina (IEL) circumference, and neointimal hyperplasia response were similar to those observed in group 1. In group 3, the shape of the lesion appeared more concentric and the fracture of the IEL more fragmented than in group 1. Although this model of injury/reinjury did not lead to more severe intimal hyperplasia, performing a second angioplasty at the same site did lead to a more concentric intimal response, related to multiple fractures of the IEL.

Angioplasty, Balloon, Coronary↗

PubMed2000

Surgical therapy in infertile men with ejaculatory duct obstruction: technique and outcome of a standardized surgical approach.

In severe oligozoospermia or azoospermia, low ejaculate volume, low ejaculate pH and little or no fructose in seminal plasma suggest an obstruction of the seminal pathways at the level of the prostate gland, when vasal aplasia and ejaculatory disorders are excluded. We report on our standardized surgical approach in 16 consecutive patients with this condition after clinical evaluation, semen analysis, endocrine assessment, testicular biopsy and transrectal ultrasonography. Pre-operatively, sperm analysis demonstrated typical low-volume ejaculates with azoospermia in 12 and severe oligozoospermia in four cases. Ultrasonography demonstrated seven central (Müllerian) and five lateral cystic lesions. Four cases with central obstruction revealed no ultrasonographic pathology. After intra-operative vasopuncture and vasography for definite localization of the level of obstruction, transurethral incision and/or resection of ejaculatory ducts (TURED) was performed. Patency was proven in 15 out of 16 cases by 'intra-operative chromotubation'. In nine out of 12 patients, spermatozoa could be harvested intra-operatively from the vas. During the follow-up of 12 months, post-operative ejaculates showed persistent patency in six out of seven Müllerian cysts with concomitant improvement of sperm quality. Only three of the other nine cases remained patent with the worst results in lateral cystic lesions. Only two of the patients with Müllerian cysts have fathered a child so far. The data provide evidence for the effectiveness of surgical treatment of ejaculatory duct obstruction, especially in the case of central cystic lesions. The combination of surgery, cryostoring of spermatozoa retrieved intra-operatively and the possible storage of ejaculated spermatozoa post-operatively creates the possibility of subsequently using reproductive techniques if pregnancy is not achieved.

Adult↗