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Biomedical subjects

H Munechika

Publications and source records attributed to H Munechika.

At least 55 records · Page 3Linked to original sources
PubMed1979

Gray scale ultrasound in identification of lymphoma complicating lymphomatoid granulomatosis.

Lymphomatoid granulomatosis is a necrotizing vasculitis involving multiple organs which may be associated with lymphomatous transformation. A case of lymphomatoid granulomatosis is presented in which gray scale ultrasound identified lymphomatous transformation involving the right kidney and retroperitoneum, thus preventing unnecessary surgery. Ultrasound is a valuable modality for identifying and characterizing abdominal masses in patients at risk for neoplastic disease.

Adult↗
PubMed1978

Calcific constrictive pericarditis in Degos' disease.

A 31-year-old woman presented with symptoms and signs of constrictive pericarditis. She had a history of Degos' disease, a rare disorder characterized by skin and bowel lesions thought to be secondary to vasculitis. A chest roentgenogram showed extensive calcification of the pericardium. Although pleural and pericardial involvement has been reported in this disease, constrictive pericarditis is most unusual, and radiographically demonstrable calcification of the pericardium has not been reported previously.

Adult↗
PubMedDate not supplied

Migration of Gianturco expandable metallic stents in the upper trachea.

Endotracheal expandable metallic stents have been shown to be useful in treating malignant tracheobronchial stenosis. We report two cases of early stent migration in the upper trachea after what appeared to be a successful stent placement. We conclude that care should be taken when placing Gianturco stents across short, extrinsic, stenotic lesions with smooth mucosa located in the upper trachea because they have a tendency to migrate.

Aged↗
PubMedDate not supplied

Non-seminomatous testicular tumors: effect of lesion side on CT detection of lymph node metastasis.

Abdominal CT examinations of 40 patients with non-seminomatous testicular tumors were reviewed with previous knowledge of the side of the testicular primary. Metastatic nodes, between 1.5 cm and 2.0 cm in diameter were overlooked more frequently in patients with right than in those with left testicular primaries, because mildly enlarged aorto-caval or para-caval nodes (which are the most frequent site of metastasis from a right testicular lesion) were more difficult to detect than enlarged left para-aortic lymph nodes. Efforts to delineate the aorto-caval region on CT examinations of patients with right-sided lesions must be increased in order to reduce a surprisingly high false negative rate.

Adolescent↗
PubMedDate not supplied

Diffusion-weighted echo-planar MR imaging: clinical applications and pitfalls -- a pictorial essay.

Diffusion-weighted imaging (DWI) provides unique information about various pathological changes of the brain. DWI is sensitive for the detection of hyperacute infarcts, and useful in distinguishing acute or subacute infarcts from chronic infarcts. DWI is useful in differentiating cytotoxic edema from vasogenic or interstitial edema, which may help to determine prognosis. DWI is useful in differentiating cystic or necrotic tumors from abscesses or epidermoids. DWI can discriminate nonenhanced tumor infiltration from vasogenic edema, and differentiate dysmyelination from demyelination.

Brain Diseases↗
PubMedDate not supplied

Computed tomography of retroperitoneal cystic lymphangiomas.

The CT features of retroperitoneal lymphangiomas are unilocular or multilocular cysts in the retroperitoneum and slightly and uniformly thickened wall that enhances following contrast medium administration. Three cases are reported.

Child↗
PubMedDate not supplied

CT and MR findings in tuberculous mediastinitis.

OBJECTIVE: Tuberculous mediastinitis, a rare complication of pulmonary tuberculosis, may simulate a mediastinal tumor on chest radiography. For evaluation and follow-up of the disease, CT and MRI are needed. MATERIALS AND METHODS: Two cases of tuberculous mediastinitis are presented with emphasis on the importance of MRI. In both cases, MRI was performed because the CT appearance was unusual for a mediastinal tumor. RESULTS: The areas of low signal intensity within the anterior mediastinal mass on both T1- and T2-weighted imaging were due to the reactive fibrous tissue and were suggestive of an inflammatory mass. CONCLUSION: When a mediastinal mass would be unusual on CT, MRI should be performed. If there are areas of low signal intensity within the mass on both T1- and T2-weighted imaging, an inflammatory mass such as tuberculous mediastinitis, is one of the possibilities.

Adult↗