Search PubMed⌕ Search

Biomedical subjects

F Paraf

Publications and source records attributed to F Paraf.

At least 37 records · Page 2Linked to original sources
PubMed1994

[Benign atypical cysts of the kidney: MRI aspects].

The aim of this study was to assess the magnetic resonance imaging (MRI) characteristics of 13 benign complex renal cysts using T1 and T2-weighted images and contrast-enhanced images. The results have been compared to CT and ultrasonographic findings in all cases and correlated with histopathologic data in 12 cases. Five groups have been defined according to the MR features. Group 1: homogeneous low signal intensity on T1-weighted images and homogeneous high signal intensity on T2-weighted images mimicking simple cyst (n = 2); group 2: homogeneous high signal intensity on both T1 and T2-weighted images mimicking hemorrhagic cyst (n = 1); group 3: caracterised by high signal intensity on T1-weighted images and fluid-iron level on T2-weighted images (n = 3); group 4: characterised by fluid-iron level on both T1 and T2-weighted images (n = 3); group 5: pseudotumoral feature: heterogeneous signal intensity and/or wall contrast enhancement (n = 3). Among the 13 indeterminate lesions on ultrasonography and CT, MRI was of diagnostic value in 8 cases, whereas the 5 remaining cases remained indeterminate on MR images. Our results suggest that MRI can be useful in the diagnosis of benign complex cyst of the kidney presenting as indeterminate cystic lesion on other modalities.

Adult↗
PubMed1993

Acute fatty liver of pregnancy after exposure to toluene. A case report.

We describe a patient in whom acute fatty liver of pregnancy developed after long-term toluene exposure. Acute fatty liver of pregnancy was documented by a liver biopsy specimen stained with oil red O and observed under electron microscopy. Although the mother did well, she gave birth to a stillborn whose autopsy showed visceral congestion and placental infarction. This case raises the hypothesis of a possible relationship between toluene exposure and acute fatty liver of pregnancy.

Acute Disease↗
PubMed1993

Renal cell carcinoma containing fat: demonstration with CT.

It is widely believed that demonstration of fat within a well-marginated renal tumor at computed tomography (CT) is highly suggestive of angiomyolipoma and can rule out renal cell carcinoma. The authors describe a patient in whom CT demonstrated a solid mass containing calcifications and small amounts of fat. Renal cell carcinoma was diagnosed at pathologic examination. The carcinoma had tubular and papillary architectural configurations associated with areas of osseous metaplasia located in the fibrous stroma of the tumor. Renal cell carcinoma should be considered in the differential diagnosis of well-marginated lipomatous renal tumors when intratumoral calcifications are identified at CT. Such calcified, fat-containing renal tumors must be evaluated with surgical exploration and treated as any other indeterminate renal tumors.

Adipose Tissue↗
PubMed1992

Adenomas arising in Barrett's esophagus with adenocarcinoma. Report of three cases.

Adenocarcinoma of the esophagus is a well known complication of Barrett's esophagus, and results from a dysplasia-carcinoma sequence. This report describes 3 patients with adenomatous polyps arising in Barrett's esophagus. One patient presented with multiple sessile or pedunculated polyps giving a polyposis appearance; the other two patients had single polyps associated with distinct adenocarcinoma arising in Barrett's esophagus. Polyps consisted of adenomatous proliferation with adenocarcinoma in the 3 patients. Review of the literature identified twelve previously reported cases. These cases show that although rare, adenomas may arise in Barrett's esophagus, and are most likely premalignant lesions such as other adenomas of the gastrointestinal tract.

Adenocarcinoma↗
PubMed1992

Esophageal squamous carcinoma in five patients with Barrett's esophagus.

Adenocarcinoma of the esophagus is a well-known complication of Barrett's esophagus. This report describes five patients (three men and two women) with Barrett's esophagus and squamous carcinoma of the esophagus. All patients had hiatal hernia, and three had a history of tobacco and alcohol use. The tumors were located in the Barrett's mucosa in one case, at the squamocolumnar junction in two cases, and in the squamous-lined mucosa above the Barrett's mucosa in two cases. One patient also had focal adenocarcinoma associated with the squamous carcinoma of the esophagus. Review of the literature identified 11 previously reported cases. Occurrence of esophageal squamous carcinoma in Barrett's esophagus patients suggests a possible relationship between these two conditions, and the need for a careful evaluation of the squamous esophageal mucosa and the squamocolumnar junction at the time of endoscopy.

Adenocarcinoma↗
PubMed1991

A simple biological index for detection of alcoholic liver disease in drinkers.

To make liver biopsy unnecessary in certain cases, PGA (P, prothrombin time; G, gamma-glutamyl transpeptidase; A, apoliprotein AI), a simple biological index combining a specific test for severe liver disease (prothrombin time), a sensitive test of alcoholic liver disease (serum gamma-glutamyl transpeptidase), and a test for liver fibrosis (serum apolipoprotein AI), was evaluated in a training sample of 333 drinkers and validated in 291 other drinkers. All patients underwent an intercostal liver biopsy, and the specimen was independently read by two pathologists. The PGA index varied from 0 to 12. When PGA was less than or equal to 2, the probability of cirrhosis was 0% and the probability of normal liver or minimal changes 83%. Conversely, when PGA was greater than or equal to 9, the probability of normal liver or minimal changes was 0% and the probability of cirrhosis 86%. These values did not vary between training and validation periods, between asymptomatic vs. symptomatic subjects or between PGA at admission vs. PGA 1 week later. This index could be useful for general practitioners in identifying subjects at high risk for severe alcoholic liver disease.

Adult↗