陰嚢内腫瘤を初発症状とした結節性多発動脈炎の1例

Abstract

16歳男.左陰嚢内に有痛性腫瘤を認め近医受診, 左精巣状態炎の診断で, 精査目的のため当科受診した.諸検査にて, 左精巣腫瘍を疑い脊椎麻酔下に左高位精巣摘除術を施行した.病理所見的に精巣及び精巣状態に発生した結節性多発動脈炎と診断された.術前に異常所見のみられなかった右精巣状態にも術後1週目より硬結が出現たが, 酢酸プレドニゾロンの経口投与により硬結は軽快し, 6週間後には正常となった

A 16-year-old boy with a painful tumor in the left scrotum was referred to our department. CT scans showed a low density area in the left testis, so we diagnosed a left testicular tumor and performed left inguinal orchiectomy. Histological examination revealed polyarteritis nodosa (PN) of the testis and epididymis. Systemic examination revealed no other evidence of PN. Although induration developed in the right epididymis after the operation, it resolved with steroid therapy. The patient is currently asymptomatic and is being followed at our clinic. The pathogenesis and management of this rare condition are discussed.