FVH Pathologie Practice Questions - Fachtierarzt FVH Für Pathologie (Switzerland) Exam

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At post-mortem examination of a 4-month-old piglet, a segment of small intestine is invaginated into an adjacent distal segment. Which morphological feature definitively distinguishes a true ante-mortem pathological intussusception from an agonal (post-mortem) invagination?

The invaginated segment easily slides out upon gentle traction without any mucosal resistance Absence of mesenteric vessel traction or luminal contents within the intussuscipiens Complete lack of serosal fibrin deposition, congestion, or edema in both intestinal layers Intense venous congestion, fibrin exudation, edema, and mural necrosis with resistance to manual reduction

Correct Answer:

Intense venous congestion, fibrin exudation, edema, and mural necrosis with resistance to manual reduction

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