Masa rectal como manifestación metastásica de un cáncer de próstata: reporte de un caso

Prostate adenocarcinoma is the most common malignancy in men; however, its mortality does not rank among the top four causes of cancer-related death in this population. The most frequent metastatic sites are bone, liver, and lungs, while involvement of adjacent organs such as the colon or rectum is rare. Nevertheless, when local invasion into the gastrointestinal tract occurs, it is usually associated with a poorer prognosis. Therefore, it is essential to promptly recognize symptoms and consider this possibility as a differential diagnosis when encountering neoplastic-appearing lesions during procedures such as colonoscopy. We present the case of a 70-year-old man with a history of Gleason 4+4 prostate adenocarcinoma, initially treated with radiotherapy and hormone therapy. Years later, he presented with intestinal obstruction, and an infiltrative rectal mass was identified. Biopsy confirmed prostatic metastasis. Despite receiving targeted treatment, the patient died from infectious complications six years after the initial diagnosis.