Leiomyosarcoma of the Colon.

Leiomyosarcoma of Colon Presented as Retroperitoneal Mass: A Rare Case Report

In this report, we present the case of a patient who underwent curative surgery for leiomyosarcoma arising in the descending mesocolon and for a metachronous liver metastasis, together with the clinicopathological findings and a literature review. Case report

Mesenteric leiomyosarcoma is a rare disease with poor prognosis. Previously, mesenteric leiomyosarcoma was not differentiated from gastrointestinal stromal tumor (GIST), which is the most common mesenchymal tumor of the gastrointestinal tract, and several cases of GIST may have been misclassified as mesenteric leiomyosarcoma. Thus, the actual clinicopathological characteristics of mesenteric le...

Author's response to reviews Title: Leiomyosarcoma of sigmoid colon with multiple liver metastases and gastric cancer: case report

Recurrent Renal Leiomyosarcoma Mimicking a Colonic Submucosal Tumor: A Case Report

A primary leiomyosarcoma of the kidney is a rare, but highly aggressive, neoplasm, accounting for only 0.1% of all invasive renal tumors. Local or systemic recurrence is common, but a leiomyosarcoma is difficult to diagnose preoperatively. We recently encountered an interesting case of an unusual recurrence of a renal leiomyosarcoma. A 57-year-old woman visited our hospital complaining of lower...

Leiomyosarcoma of the sigmoid colon with biorherapy

Background: Leiomyosarcoma (LMS) of sigmoid colon is an extremely rare neoplasm with poor prognosis, which is often misdiagnosed as colonic adenocarcinoma. The diagnosis of LMS depends on the pathology. The mitosis and the histological grade observation are important for diagnosis. Unlike gastrointestinal stromal tumor, c-KIT in LMS is negative, and immunohistochemistry examination is positive ...

A Rare Case of Colonic Leiomyosarcoma in Association with Ulcerative Colitis

Ulcerative colitis (UC) is known to be associated with an increased risk of colorectal cancer. However, the occurrence of non-epithelial malignancies is uncommon. An elevated lesion in the descending colon was found in a 51-year-old woman with a 30-year history of UC. Despite tumor progression, repeated biopsies showed no cancerous findings. Because the lesion was highly suspected to be a malig...