A 71-year-old man presents with painless large-volume hematochezia. Vital signs show BP 128/76, HR 92, RR 16, temperature 37.2°C, SpO2 98%. He reports chronic constipation but denies abdominal pain or fever. Abdominal examination reveals no tenderness. Hemoglobin is 11.2 g/dL. Colonoscopy demonstrates multiple outpouchings in the sigmoid colon with intact mucosa between lesions. Which diagnosis best explains these findings?
- A)A true diverticulum containing all layers of the bowel wall
- B)A congenital remnant of the vitelline duct
- C)A traction diverticulum above the upper esophageal sphincter
- D)A pseudodiverticulum caused by mucosal herniation through the muscular wallGABARITO
- E)A transmural inflammatory outpouching associated with granulomas
Explicação
Colonic diverticulosis consists of false diverticula in which mucosa and submucosa herniate through the muscularis propria, most commonly in the sigmoid colon. It often causes painless bleeding and can progress to diverticulitis if inflamed. Ver explicação completa e trilha adaptativa →