Castleman disease with fibrous pseudotumor in the abdomen
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Partially calcified right lower abdominal soft tissue mass. No other suspicious findings.
Excisional biopsy confirmed hyaline-vascular type of Castleman disease with calcifying fibrous pseudotumor.
Castleman disease is a non-neoplastic, non-clonal lymph node hyperplasia which can be idiopathic or associated with HIV, lymphoma, POEMS and other disorders. It commonly presents as avidly-enhancing adenopathy. Most cases (90%) are hyaline vascular, which occurs in younger patients, is unicentric, asymptomatic, and follows a benign course.