A 40 years old male patient presented with mild abdominal pain, mild constipation with a feeling of incomplete evacuation and mucus in stools for the past four years. On examination, tenderness is present in left iliac fossa. The most likely diagnosis is:

Diveicular disease of colon:- Intraluminal pressure - Herniation of mucosa & Sub-mucosa at the site of weakness (site of penetration of nutrient aeries) - Acquired - Multiple - False - Located along mesenteric border- M/C site - Sigmoid colon- Perforation - Inflammation - Diveiculitis IOC for colonic diveicula - Ba. Enema (Saw tooth appearance)IOC for Dx of diveiculitis- CECT C/F: - Pain - Tenderness- Incomplete evacuation- Constipation Ulcerative Colitis:- Proctitis- Multiple episodes of loose stools- Hematochezia - Decrease in goblet cells- decrease in mucus production- No / Less tenderness in LIF- Constipation is unlikely Irritable bowel syndrome Abdominal pain,cramping or bloating that releives or paially releives by passing bowel- | frequency of stools- No increase in bowel movement- A/w long history No tenderness in LIF Carcinoma colon:- 5th - 6th decade- Anorexia, weight loss- Colicky abdominal pain due to obstruction