Article: Transperineal excision of malignant peripheral nerve sheath tumors of the ischiorectal fossa: Case report of a rare tumor in a frequently forgotten anatomical region.
International journal of surgery case reports
2023 Volume 110, Page(s) 108674
Abstract: Introduction and importance: Malignant peripheral nerve sheath tumor is an aggressive tumor that arises from peripheral nerves. Frequently associated with neurofibromatosis, its common localization is in the extremities, trunk (with paravertebral ... ...
| Abstract | Introduction and importance: Malignant peripheral nerve sheath tumor is an aggressive tumor that arises from peripheral nerves. Frequently associated with neurofibromatosis, its common localization is in the extremities, trunk (with paravertebral regions), neck and head. Some cases have been found in the pelvis or uterus. In this case report we illustrate one of the rarest localization of this type of tumor in the ischiorectal fossa, with the full recovery of the patient after surgical excision and radiotherapy. Case presentation: A 61-year-old woman showed a lump near the anus which was initially diagnosed as a lipoma of the right ischiorectal fossa, by Computed Tomography scan. The tumor was completely removed with a minimal skin incision, and the patient had a complete recovery. Only the pathological examination determined the diagnosis of malignant peripheral nerve sheath tumor, in this unusual localization. In consideration of its high aggressiveness the patient underwent radiotherapy. After more than two years of follow-up there is no sign of recurrence. Discussion: In sites far from branches of nerves, malignant peripheral nerve sheath tumors can be considered episodic. Ischiorectal fossa is a rare localization, and the differential diagnosis from benign mesenchymal cell tumors can be challenging. When possible, a biopsy should be performed before surgery. Conclusion: Surgical excision of tumors in ischiorectal fossa should be always complete, in consideration of possible histological surprise. |
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| Language | English |
| Publishing date | 2023-08-18 |
| Publishing country | Netherlands |
| Document type | Case Reports |
| ISSN | 2210-2612 |
| ISSN | 2210-2612 |
| DOI | 10.1016/j.ijscr.2023.108674 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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