biostudies-literatureUnknown2020Beauchamp APrimary colorectal leiomyosarcoma is an excessively rare entity. It is associated with an aggressive behavior and typically favor hematogenous spread. The current standard of care is surgical resection. A 49-year-old patient presented with a 2-month history of fever. A PET-scan revealed a hypermetabolic mass in the transverse colon, and colonoscopy confirmed a tumor. A right hemicolectomy was performed. Histopathological diagnosis was of a leiomyosarcoma. Fourteen months after the surgery, a follow-up abdominal scan revealed a 2?cm mesenteric lymph node that was hypermetabolic on PET-scan. The mesenteric lymph node was resected and histopathology confirmed a leiomyosarcoma metastasis. This case opens the controversy on the management of rare lymph node recurrences in colorectal leiomyosarcoma.Case reports in surgery6935834https://www.ebi.ac.uk/biostudies/studies/S-EPMC7125469biostudies-literatureMesenteric Lymph Node Recurrence of a Primary Colorectal Leiomyosarcoma.PMC7125469Latour MSebajang HKhullar SHajjar RBeauchamp ASchwenter FfalseMesenteric Lymph Node Recurrence of a Primary Colorectal Leiomyosarcoma.Primary colorectal leiomyosarcoma is an excessively rare entity. It is associated with an aggressive behavior and typically favor hematogenous spread. The current standard of care is surgical resection. A 49-year-old patient presented with a 2-month history of fever. A PET-scan revealed a hypermetabolic mass in the transverse colon, and colonoscopy confirmed a tumor. A right hemicolectomy was performed. Histopathological diagnosis was of a leiomyosarcoma. Fourteen months after the surgery, a follow-up abdominal scan revealed a 2?cm mesenteric lymph node that was hypermetabolic on PET-scan. The mesenteric lymph node was resected and histopathology confirmed a leiomyosarcoma metastasis. This case opens the controversy on the management of rare lymph node recurrences in colorectal leiomyosarcoma.2020-01-01T00:00:00Z2020 2020-05-22T16:39:01Z2020-05-22T16:39:01ZS-EPMC71254693225749910.1155/2020/6935834