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Biopsy of anal and/or rectal wall through anus

Removal of growth of rectum through anus

Removal of growth of rectum through anus with removal of a portion of muscle

Diagnostic exam of rectum and lower large bowel using an endoscope

Injection beneath lining of lower large bowel using a flexible endoscope

Removal of polyps or growths of lower large bowel using a flexible endoscope with mechanical snare

Ultrasound exam of lower large bowel using a flexible endoscope

Diagnostic exam of anus and rectum under anesthesia

Insertion of drain (seton) into anus

Drainage of deep abscess in rectum