Case A 17‐year‐old male who presented with urinary retention was found to have an alveolar rhabdomyosarcoma involving the peritoneum, prostate, and bladder. After neoadjuvant chemotherapy, a residual mass in the obturator internus muscle was resected through a perineal approach and inferior pubic ramus osteotomy. Conclusion Tumors in the obturator internus are uncommon, resulting in limited literature on approaches and technical considerations for resecting masses in this region. We present a case of successful tumor resection from the obturator internus muscle using this approach while preserving neurovascular and urogenital function with no recurrence at 24‐month follow‐up.
Kwan et al. (2026) studied this question.