A case of rare metastasis of colon cancer. Clinical case

Metastatic lesions in muscles appear to be a rare manifestation of malignant neoplasms with an unfavorable prognosis. To date, due to the low incidence of metastases to the ileo-lumbar muscle, a definite concept of its treatment does not exist. The article describes the clinical case of a 33-year-old patient after a combined treatment of colon cancer in 2017 who progressed 5 months after the end of chemotherapy. Pathomorphological examination after ileo-lumbar muscle lesion removal revealed metastasis of colon cancer adenocarcinoma. The patient underwent IMRT-SIB radiation therapy and chemotherapy with 5-FU with no signs of progression for 4 months.