精巣内精子採取後に発見された精巣腫瘍

Testicular tumor during treatment of male infertility：A case report

症例は35歳，男性。主訴は右精巣腫大。無精子症にて精巣内精子採取（TESE）を複数回施行し，徐々に精巣腫大を自覚した。軽度の腫瘍マーカー上昇を認め，悪性を否定し得ないため右高位精巣摘出術を施行した。病理組織診断では精上皮腫であったが，正常精巣組織からは精子細胞が採取されたため，これを培養し，卵実質内精子注入法（ICSI）を行ったところ，受精卵を得たが妊娠は成立しなかった。

A 35-year-old man with a complaint of right scrotal swelling was referred to our hospital. He had received testicular sperm extraction several times due to azoospermia. He received a high orchiectomy,and the pathological findings showed the tumor was pure seminoma. From the normal testicular tissue,sperm cells were extracted. Intracytoplasmic sperm injection was performed but the fertilization was not accomplished.