Carcinoma Rectum - Etiology, pathogenesis

Discuss about Etiology and pathogenesis of CA rectum

1. Carcinoma Rectum

2. Mr. Sriramalu 74 years male C/o loose stools on and off for past 3 months -6 to 7 episodes per day -semisolid and yellowish -Occasionally mixed with blood No other complaints No history of any comorbidities

3. CECT

4. COLONOSCOPY

5. Colonoscopy

6. Biopsy