2023 Volume 65 Issue 3 Pages 244-250
A 72-year-old man with a history of lumbar spinal canal stenosis underwent preoperative chest and abdominal computed tomography, which revealed mediastinal and presacral tumors containing a rich fatty component. We suspected a soft-tissue malignancy such as liposarcoma and performed a transrectal endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) for evaluation of the presacral tumor. Histopathological evaluation of the biopsy specimen confirmed diagnosis of myelolipoma, and we decided to follow up him without surgery. Although a biopsy is necessary for selection of an optimal treatment strategy, transrectal EUS-FNB of soft-tissue tumors is associated with the risk of complications such as bleeding and infection and dissemination including needle tract seeding. We report a rare case of a presacral myelolipoma diagnosed using transrectal EUS-FNB, without any complications.
