Table of Contents
Definition / general | Diagnosis | Gross description | Microscopic (histologic) description | Additional referencesCite this page: DePond WD. Yersinia pseudotuberculosis. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/lymphnodesyersiniapseudoTB.html. Accessed January 16th, 2021.
Definition / general
- Clinical picture usually resembles acute appendicitis with possible abdominal mass (Eur J Pediatr Surg 1997;7:180) but laparotomy often shows mesenteric lymphadenitis
- Usually self limited but may be associated with Kawasaki disease (Kansenshogaku Zasshi 2005;79:895, Acta Paediatr 1997;86:661)
- Ampicillin reduces fetal excretion of bacteria but provides no clinical benefit (Pediatr Infect Dis J 1988;7:686)
- Gram stain: gram negative, polymorphic, coccoid or ovoid mobile bacteria
Diagnosis
- PCR
- Cultures
Gross description
- Inflammation of terminal ileum and cecum
Microscopic (histologic) description
- Capsular thickening and edema
- Granulomas with central necrosis and microabscesses
- Immunoblasts and plasma cells in cortical and paracortical region, large lymphocytes within sinuses, germinal center hyperplasia
