A 61-year-old woman with a positive fecal occult blood test undergoes colonoscopy. Vital signs are BP 128/82 mmHg, HR 76/min, RR 14/min, and temperature 37°C. Hemoglobin is 10.2 g/dL. Normal-appearing mucosa from the descending colon is biopsied; no masses or ulcerations are visualized. She denies recent antibiotic use. Which histologic features are most likely present in this normal colonic tissue?
- A)Pseudostratified ciliated columnar epithelium
- B)Nonkeratinized stratified squamous epithelium
- C)Numerous straight crypts and abundant goblet cellsGABARITO
- D)Fingerlike villi with Paneth cells at the base
- E)Submucosal mucous glands and villi
Explicação
Normal colonic mucosa has straight tubular crypts and abundant goblet cells but no villi. Goblet cells lubricate the increasingly solid fecal contents. The descending colon location and request for normal mucosal histology identify this pattern. Ver explicação completa e trilha adaptativa →