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Updated: Feb 17, 2026

Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
Published on: October 31, 2025
Asymptomatic giant retroperitoneal mass detected at a medical checkup
Tsutomu Takeda1, Daisuke Asaoka1, Yuki Fukumura2
1Department of Gastroenterology Juntendo University school of Medicine Tokyo Japan.
Abstract:
The differential diagnosis of retroperitoneal mass includes liposarcoma, leiomyosarcoma, malignant fibrous histiocytoma, neurofibroma, stromal tumor, teratoma, and lymphoma. Leiomyosarcoma is rare with poorer prognosis than other soft tissue sarcomas. Soft tissue sarcoma of retroperitoneal origin often remains asymptomatic until tumor enlargement, leading to diagnosis at advanced stages.
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