Two cases of leiomyosarcoma, one in the esophagus and the other in the small intestine, underwent magnetic resonance imaging (MRI). Spin echo T1-weighted images of both leiomyosarcomas showed almost the same intensity as muscle. Spin echo T2-weighted images showed the tumors to be hyperintense compared with fat; however, the esophageal tumor was more hyperintense than the small intestinal one. The jejunal leiomyosarcoma had a central cavity on MRI and CT, suggesting that it was malignant.

Angiography↗

PubMedDate not supplied

Struma ovarii: CT and MR findings.

A case of pure struma ovarii is reported with its CT, magnetic resonance (MR), and pathologic findings. Both MR and CT revealed a complex mass composed of solid elements and multiple cysts; CT revealed calcifications not apparent on MR.

Aged↗

PubMedDate not supplied

Chronic eosinophilic pneumonia: evolution of chest radiograms and CT features.

OBJECTIVE: Our object is to describe and compare the findings on plain chest radiographs and CT scans in patients with chronic eosinophilic pneumonia of varying duration, as judged by their clinical history. MATERIALS AND METHODS: We retrospectively reviewed the initial chest radiographs and initial CT scans that were obtained before treatment with corticosteroid in 17 patients with pathologically proven or clinically diagnosed chronic eosinophilic pneumonia. RESULTS: Eleven of the 17 patients showed predominantly peripheral patchy or confluent consolidation with or without ground-glass opacities on chest radiography. Sixteen patients, on the other hand, showed various types of abnormalities with peripheral predominance on CT. The seven patients in whom the initial CT was performed within 1 month after the onset of symptoms had dense confluent consolidation (7/7) with or without ground-glass opacities. When the initial CT was performed 1-2 months after onset of symptoms, inhomogeneous patchy consolidation or nodules (5/7) or ground-glass opacities (2/7) were observed. When the initial CT was performed > 2 months after the onset of symptoms, streaky or band-like opacities (1/3) or lobar atelectasis (1/3) was seen. CONCLUSION: Patients with chronic eosinophilic pneumonia show an evolution of CT features at varying time intervals after the onset of disease.

Adult↗

PubMedDate not supplied

Transjugular intrahepatic portosystemic shunts: midterm results in 28 patients.

This paper reports the clinical and procedural results of 28 consecutive TIPS procedures in 25 males and three females with a mean age of 48 years. All patients had cirrhosis with portal hypertension and varices. Twenty-two patients had recurrent bleeding. Shunts were completed in 26 of 28 patients, and no death was associated with the procedure. Portal vein pressure was reduced from 3.98 +/- 0.24 KPa before shunting to 2.40 +/- 0.16 KPa after shunting. Doppler US revealed that the maximum blood flow velocity in the main portal vein increased from 14.0 +/- 4.5 cm/sec to 48.0 +/- 16.5 cm/sec. Shunt patency was determined by color Doppler US in 20 patients. Shunt stenosis was found in five patients and occlusion in one, and these findings were confirmed by angiography. Ascites disappeared in six of eight cases, and varices disappeared completely in 11 patients and abated greatly in 12 patients two months after TIPS. Rebleeding occurred in three cases (occlusion, 1; stenosis, 2) during a mean follow-up time of 6.5 months. One of these cases was successfully redilated. The initial results suggest that TIPS is a safe and effective method of portal decompression and that the key to portal vein puncture is to understand the three-dimensional relationship between the hepatic and portal veins.

Adult↗

PubMedDate not supplied

MR FLAIR imaging of herpes simplex encephalitis.

We performed MRI of the brain with both conventional spin-echo (SE) and fluid-attenuated inversion-recovery (FLAIR) sequences in two cases of herpes simplex encephalitis. The lesion conspicuity in the gray and white matter was found to be the greatest with FLAIR imaging.

Adolescent↗

PubMedDate not supplied

FLAIR appearance of Wernicke encephalopathy.

We performed MR imaging of the brain with both conventional spin-echo (SE) and fluid-attenuated inversion-recovery (FLAIR) sequences in a case of Wernicke encephalopathy. Lesion conspicuity was found to be better with FLAIR imaging.

Artifacts↗

PubMedDate not supplied

A case of enlarged cavernous sinus mistaken for petrous apex tumor.

We experienced a case of abnormally enlarged cavernous sinus extending into the petrous apex, which was confused with a petrous apex tumor or an enlarged Meckel cave. The CT and MR appearances were of expansile lesions in the petrous apex with water signal intensities on both T1- and T2-weighted MR images. Unfortunately, these findings were not specific. Cerebral angiography was only suggestive of enlarged cavernous sinus involving the petrous apex because of opacification of the petrous apex in the venous phase. Our case was confirmed by surgery as enlarged cavernous sinus involving the petrous apex.

Adult↗