Rectal leiomyosarcoma as the initial phenotypic manifestation of Li-Fraumeni-like syndrome: a case report and review of the literature.

Background: Leiomyosarcoma is a rare malignant tumor of smooth muscle origin and represents 10-20% of all soft tissue sarcomas. Primary colon and rectal sarcomas constitute < 0.1% of all large bowel malignancies.

Clinical Factors Contributing to Anastomotic Leak After Mid-to-High Colorectal Anastomosis.

Background: Low colorectal anastomoses carry a high anastomotic leak (AL) rate (up to 20%) and thus are commonly diverted. Much less is known about mid-to-high colorectal anastomosis, which carries a leak rate of 2-4%. The objective of this study was to determine our AL rate after mid-to-high colorectal anastomosis and associated risk factors.