Rectal Mass on Self-Exam

A rectal mass discovered on self-exam is a palpable lump or abnormality within the reach of a finger in the rectum. This finding is a significant clinical sign that requires prompt medical investigation. While it can be caused by benign conditions like thrombosed hemorrhoids or a large polyp, it is also a primary presentation of rectal cancer. The physical characteristics of the mass (hard vs. soft, mobile vs. fixed, ulcerated) can provide clues to the diagnosis, but a definitive diagnosis requires an endoscopic evaluation and biopsy. The importance of a medical workup is to definitively rule out or confirm malignancy, as early diagnosis is crucial for successful treatment.