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J M Tubiana

Publications and source records attributed to J M Tubiana.

At least 19 recordsLinked to original sources
PubMed2006

[External phased-array MR imaging preoperative assessment of rectal cancer].

The main problem associated with rectal cancer treatment is tumor recurrence. Randomized controlled studies have shown that adjuvant preoperative radiation therapy is effective for reducing local recurrence. These studies have also demonstrated that there are groups of rectal cancer patients with differing degrees of risk for local recurrence. At one end of the spectrum is the low-risk group: patients with superficial rectal cancer, who can be treated with surgery alone. At the other end is the high-risk group: patients with a close or involved resection margin at total mesorectal excision, the very advanced tumors that require a longer course of chemotherapy and radiation therapy, and extensive surgery. Paramount for this selection and differentiated treatment is a reliable preoperative test that can be used to distinguish these groups of patients. In this review article, we will discuss the role of high-resolution phased array MRI among the other imaging modalities such as endorectal MRI, endorectal US, and CT. We will also discuss and illustrate MR imaging results in terms of T stage, circumferential resection margin, locally advanced rectal cancer, and N stage.

Humans↗
PubMed2005

[Reactive synovitis: MRI features with arthroscopic correlation].

OBJECTIVES: To evaluate MR imaging in detecting and characterizing secondary reactive synovitis and correlate the results with arthroscopy. MATERIALS AND METHODS: Retrospective study of 10 patients referred for MR imaging and arthroscopy of the knee or shoulder. The diagnosis of reactive synovitis was confirmed by arthroscopy and pathological examination. Synovial thickening was graded at MRI as follows. Grade 0: normal; grade 1: diffuse synovial thickening; grade 2: nodular synovial hypertrophy; grade 3: pseudotumoral synovial mass. RESULTS: Synovitis was described at MRI in 8 cases. There were 2 false negative results on MR imaging for the knee. Synovitis was secondary to knee trauma and rotator cuff tear or surgery of the shoulder. On arthroscopy, all synovial lesions were detected and confirmed at pathology. Synovitis was not detected at MRI (grade 0) in 20% of cases. Synovitis appeared diffuse (grade 1) in 30%, nodular (grade 2) in 30% and pseudotumoral (grade 3) in 20%. Bony erosions were adjacent to synovial thickening in 5 cases. CONCLUSION: Reactive synovitis can occur after trauma. MR imaging is useful in detecting and evaluating secondary reactive synovitis. Arthroscopy and synovial biopsy are necessary to exclude infectious or tumoral synovitis.

Adult↗
PubMed2005

[Imaging features of iatrogenic drug disorders].

Iatrogenic drug disorders should be considered when presented with a number of imaging findings mainly involving the nervous, musculoskeletal, gastrointestinal or genitourinary system. Care should be used when differentiating between imaging findings related to the underlying pathology and imaging findings related to drug-related complications: examples include the impact of steroid therapy on bones and the impact of triple-drug anti-HIV therapy and its impact of fatty tissue. Knowledge of the necessary imaging surveillance protocol is implied.

Adolescent↗
PubMed2004

[Post-traumatic intramural hematoma of the colon].

Intramural hematoma of the colon is a rare complication of blunt abdominal trauma. We report the case of a 32-year-old man who presented with abdominal pain related to blunt trauma. The initial diagnosis of post-traumatic intramural hematoma of the colon was performed at CT scan and proven at colonoscopy. Although the majority of cases warrant surgery, conservative therapy was proposed in the present case with spontaneous resolution of the hematoma demonstrated by CT scan.

Adult↗
PubMed2003

[Radiological spectrum of myositis ossificans circumscripta evolution].

Myositis ossificans circumscripta is a benign pathology of soft tissue occurring in young patients often after localized trauma. Histological and radiological appearances may mimic a malignant neoplasm, mainly sarcoma. We report a case characteristic of myositis ossificans circumscripta, to illustrate diagnostic arguments which are based on their appearance on conventional radiographs, computed tomography and magnetic resonance imaging and on their changes with time.

Adult↗
PubMed2003

[Gastrointestinal tract in the elderly].

Patient's age no longer is a major factor when discussing the diagnosis and treatment of hepatobiliary and gastrointestinal diseases. However, discussing with the physician in charge of the patient is the only adequate way to propose the quickest, least invasive and most comfortable imaging modality that will give a proper answer to the clinical problem. Cross sectional imaging, especially ultrasound, CT and in some cases MRI, plays an important role in the diagnosis of these diseases.

Age Factors↗
PubMed2002

[D-Dimer determination combined with clinical probability for the diagnosis of leg venous thrombosis].

OBJECTIVE: To evaluate the results of combination of D-Dimer test and simple clinical model for the diagnosis of deep vein thrombosis (DVT). MATERIALS AND METHODS: Inclusion: clinical suspicion of DVT. Non inclusion criteria were Clinical model performed by the referring physician included probability varying from high to low. D-Dimer test was performed by five different rapid techniques. Standard of reference was Doppler ultrasonography (DU) performed by a senior radiologist. RESULTS: Eight hundred and fifty-four DU were performed on a 14 months time period, including 206 suspicion of pulmonary embolism, 109 postoperative time period, 120 non-included or excluded patients, 278 incomplete observations, 141 complete observations. DVT was present in 33 cases and absent in the other 108 cases (prevalence 23%). Sensitivity and negative predictive value of the five tests were between 82 and 97% and 90 et 97%. The most sensitive test had a specificity of 36% and a positive predictive value of 32%. Combination of clinical model and D-Dimer test did not improve the diagnostic accuracy. CONCLUSION: None of the test evaluated in the present study, even when combined with the clinical model results, did allow the exclusion of DVT.

Formycins↗
PubMed2001

[Imaging in acute abdominal syndromes].

Imaging studies play an increasing role in patients with an acute abdomen. Guided by main symptoms, clinical findings and examination, imaging studies can confirm or change the diagnosis and the severity of the disease, guide the medical or surgical therapeutic. The plain film of the abdomen, despite its overall low sensibility and specificity, remains the current first-line radiological test in suspected bowel obstruction and detection of free air. The ultrasound and computed tomography, with a high sensibility and specificity, are more often used in first-line or after the plain film.

Abdomen, Acute↗
PubMed2001

Long-term follow-up after neoplastic seeding complicating percutaneous ethanol injection for treatment of hepatocellular carcinoma.

We describe a case of subcutaneous metastasis along the needle track after percutaneous ethanol injection (PEI) for treatment of hepatocellular carcinoma. After surgical resection and extrabeam radiation therapy the patient is alive without evidence of recurrence five years after PEI. One should pay attention to the abdominal wall around the needle track in interpreting CT or MR images of patients with previous PEI.

Abdominal Muscles↗
PubMed2001

Characteristics of missed lung cancer on chest radiographs: a French experience.

The purpose of this study was to report 30 cases of missed lung cancers and describe characteristics of each case. Reasons for misdiagnosis were analyzed from the report. Each radiograph was subsequently reviewed by a panel of two experts who quantified several parameters regarding image analysis and film quality. Lesions were not described in 67% of the cases and were misinterpreted as benign processes in 33% of cases. Comparison to previous chest radiographs and clinical information were seldom available on the report. Size of the lesions varied between 1 and 7 cm, location was primarily apical and paramediastinal, normal anatomy was highly or moderately complex in 87%, and distracting lesions were present in 63% of the cases. Image quality was considered perfect in 3 cases only. Among all the factors responsible for missed lung cancer, certain factors can be improved as film quality, comparison with previous radiographs, and better awareness of clinical information.

Adult↗
PubMed2001

[Imaging mechanical complications of inferior vena cava filters].

Filter placement within the inferior vena cava is performed to prevent pulmonary embolism in patients with contraindications or failure of anticoagulant therapy. Several complications of vena cava filters have been described. However, mechanical complications related to IVC filters may not be of any clinical significance. The purpose of this pictorial essay is to present the imaging features of complications related to inferior vena cava filter placement.

Biomechanical Phenomena↗
PubMed2001

Merkel cell carcinoma: a rare cause of hypervascular nasal tumor.

Cutaneous neuroendocrine carcinoma, first described in 1972, is an aggressive disease usually occurring in sun-exposed skin. Other sites have been described, however; such tumors occasionally occur within the nasal fossa. A high rate of metastasis (>30%) explains the poor prognosis. Descriptions of the imaging features of these tumors, mainly located in cutaneous region, are rare. We therefore present the imaging features of two cases of Merkel cell carcinoma involving the sinonasal region, suggestive of a hypervascular tumor.

Aged↗
PubMed2001

[MRI appearance of a primary leiomyosarcoma of bone with epiphyseal involvement].

Primary leiomyosarcoma of bone is a rarely reported tumor of elderly subjects. It usually shows an aggressive osteolytic pattern on plain radiographs and involves predominantly the metaphyses of long bones. We report a case of primary leiomyosarcoma of bone, which is atypical by its epiphyseal location, a non-aggressive pattern on plain radiographs and its MR imaging features.

Aged↗
PubMed2001

[Publication rate of original papers orally presented at the Journées Françaises de Radiologie 1996].

OBJECTIVE: The purpose of the present study was to determine the publication rate in Medline-indexed journals of papers originally presented at the Journées Françaises de Radiologie (JFR96). MATERIALS AND METHODS: Proceedings from the JFR 96 were reviewed by two observers in conference. A Medline search encompassing 1997-1999 was performed for the lead author of all abstracts of original papers. Publication year and the journal of publication were recorded. RESULTS: 456 oral presentations were analysed, 39 papers were subsequently published corresponding to a publication rate of 8.5%. 10 papers were published in Radiology, 4 in European Radiology and 4 in the Journal de Radiologie, the other 21 in other journals. Publication rate was significantly higher for two sessions: Research session (publication rate was 22%) and Bone and Joint session (publication rate was 16%). CONCLUSION: Less than 10% of abstracts presented at JFR 96 were subsequently published in Medline-indexed journals. This rate is lower than the publication rate of papers presented at other medical meetings.

Congresses as Topic↗