PMC4531683_01
CT-scan of the large cyst in the body of the pancreas
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There was no definite pancreatic duct dilatation (Figure 1).
(A) Partly covered cuboidal epithelium and surrounding mesenchymal or ovarian-like stroma with fibrous stroma (H&E, x40). (B) Massive hemorrhage, numerous macrophages with hemosiderin deposit in the endometrial-type stroma (H&E, x100).
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The glands were admixed with well-vascularized spindle cell stroma containing multiple areas of focal hemorrhage and hemosiderin deposition in macrophage (Figure 2).
Immunostaining for ER (A), PR (B) in endometriosis of the pancreas. Increased immunoreactivity is observed (x200)
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Immunohistochemical examinations showed positive tests to antibodies to the estrogen receptor-related protein (ER) and the nuclear progesteron receptor protein (PR) (Figure 3).