Fibromatous periorchitis of testis.

Fibrous pseudotumors of the tunica vaginalis, epididymis, and spermatic cord are uncommon benign paratesticular masses. An extremely rare variant termed "fibromatous periorchitis" exhibits diffuse proliferative encasement of the testis and manifests grossly as an indurated testis reminiscent of malignancy. We present the case of a 25-year-old man who presented with a grossly abnormal testicular examination and benign scrotal ultrasound findings and pathologic evidence of fibromatous periorchitis. The natural history, gross and histologic findings, and management of fibrous pseudotumors and fibromatous periorchitis are discussed.