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Biomedical subjects

D G Varma

Publications and source records attributed to D G Varma.

58 records · Page 4Linked to original sources

CT appearance of the distended trochanteric bursa.

The CT appearance of the distended trochanteric bursa noted in an asymptomatic patient is reported. The bursal distension was noted incidentally in a patient undergoing staging for renal cell carcinoma. On CT the distended bursa was noted as a septated low attenuation lesion at the site of insertion of the gluteus medius and minimus muscles on the greater trochanter of the femur. The lesion was not associated with any degenerative changes in the hip or greater trochanter. Distension of the trochanteric bursa may occur in asymptomatic patients and the appearance of the distended bursa must be recognized on imaging studies to avoid confusing it with other lesions.

Bursa, Synovial↗

MRI of extraskeletal osteosarcoma.

We report four cases of extraskeletal osteosarcoma of the thigh to illustrate MRI findings of this rare neoplasm. Calcifications or osteoid material were not discernible in these tumors on MRI or conventional radiography. Three tumors were well demarcated on MRI and corresponded to pseudoencapsulation on radiologic-pathologic correlation. These three tumors were heterogeneous in appearance and were hyperintense to muscle on T1-weighted imaging and demonstrated high signal intensity on T2-weighted imaging. In the fourth tumor, which occupied almost the entire thigh, MRI before and after intravenous gadopentetate dimeglumine administration revealed cystic, hemorrhagic, and solid components. Pathological examination revealed a cystic hemorrhagic cavity containing necrotic and viable tumor and a large solid tumor component. The MRI findings in extraskeletal osteosarcoma are non-specific. However, in the appropriate age group the differential diagnosis of a soft-tissue mass in the thigh should include extraskeletal osteosarcoma, even in the absence of radiographically discernible calcifications or osteoid material within the soft-tissue mass.

Aged↗

Osler-Weber-Rendu disease: MR findings in the liver.

We report the magnetic resonance (MR) findings in the liver of a patient with known Osler-Weber-Rendu disease, a rare disorder characterized by arteriovenous malformations involving multiple organ systems. To the best of our knowledge, the MR findings in liver involvement have not been previously reported.

Humans↗