Colon cancer is considered to be the third most common neoplasm in men, while in women it is considered the second most common cancer, according to the World Health Organization, the Globocan database. Colon adenocarcinoma represents over 90% of malignant tumours of the colon. It is a malignant epithelial tumour originating in the epithelium of the colonic mucosa, which gradually invades all the layers of the colonic wall (the muscle of the mucosa, submucosa, own muscle, being able to surpass the serosa). We presented the case of an 80-year-old female patient with multiple comorbidities, admitted to a medical department, then transferred to the surgery department, whose definitive diagnosis was hardly made intraoperatively, despite multiple preoperative investigations performed in the two wards. The postoperative evolution was favourable. The case and the elements from the specialty literature are discussed, but also the particularities of the treatment of colonic cancer in the elderly and the possible complications arising postoperatively.
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