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Surgical Case Reports
Fig. 5 | Surgical Case Reports

Fig. 5

From: Epidermoid cyst within an intrapancreatic accessory spleen exhibiting abrupt changes in serum carbohydrate antigen 19-9 level: a case report

Fig. 5

Histological findings of the cysts in the lesion. a Hematoxylin-eosin (HE) staining. Most cystic walls are lined by stratified squamous epithelium. b Immunopositivity for CA 19-9 is observed in the epithelial cells liming the cyst and in the cystic fluid. c HE staining. The cystic wall has lost stratified squamous epithelium. Mucin in the cyst contains cholesterol clefts. Inset: Foreign-body giant cells and fibroblasts are observed near the cystic wall. d HE staining showing the complete loss of epithelial cells. The cyst contains organized mucin inside, with a thick, hyalinized mucin outside

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