AIIMS GI 2020

Crohn Disease Pathology

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Q) Which of the following is not characteristic of Crohn Disease  : * (From AIIMS 2020 November GI)  

a) Granular mucosa
b) Transmural involvement
c) Skip lesions
d) Giant cell granuloma

Ans a ) Granular Mucosa- This is a feature of ulcerative colitis ( Table 49-7 Sabiston 20) 

The typical gross appearance of ulcerative colitis is hyperemic mucosa.

Friable and granular mucosa is common in more severe cases, and ulceration may not be readily evident. ( Saby 1340) 

IN Crohn disease - Microscopically, there are focal areas of chronic inflammation involving all layers of the intestinal wall with lymphoid
aggregates. Non-caseating giant cell granulomas are found in 60% of patients and when present clearly allow a confident diagnosis of CD.

( Bailey 1242)