坐骨臀肌滑液囊炎為少見之疾患，其特徵為臀部中央疼痛，痛有可能會往下延伸至小腿。我們報告一例83 歲男性有異時性雙側坐骨臀肌滑液囊炎，在六個月內兩次發生。病人接受兩次的手術切除。此病例強調成功治療後預防復發或是對側患病的重要性。

Ischiogluteal bursitis is an uncommon disorder, characterized by pain over the center of the buttock that may radiate down the leg. We report a case of 83-year-old man had metachronous bilateral ischiogluteal bursitis, with both instances of bursitis occurring within a 6-month period. He underwent surgical excision twice. The case highlights the importance of the prevention of recurrence or contralateral involvement after successful treatment.