XXXX primarily misinterpreted as @entity420 : a case report and review of literature.

@entity1 @entity6628 @entity548 @entity1066 @entity33 @entity2225 @entity189 @entity2282 @entity46 @entity5822 @entity490 @entity420 @entity6349
Endometriosis involving intestinal mucosa is relatively uncommon. It poses a diagnostic challenge for clinicians and pathologists. We herein report a case of colonoscopic specimen revealing @entity33 . A 39-year-old @entity1 complained of red @entity548 and intermittent @entity490 . Colonoscopic examination showed a rectal mass with @entity1066 and circum wall involvement. Biopsy was processed in the suspicious of @entity189 . Morphologically, irregular glands replaced residual colorectal ones, displayed mucin depletion, nuclear stratification and subtile subnuclear vacuoles. The stroma was full of spindle cells with abundant pink cytoplasm and unclear boundary. Due to subjectively interpreting as @entity6349 in desmoplastic setting, primary @entity420 was firstly raised. Immunohistochemically, @entity5822 , ER and @entity2282 identified the essence of ectopic endometrium. @entity2225 and @entity6628 highlighted residual glands. In case of misdiagnosis, any pathologists should be aware of intestinal @entity46 for each female's colorectal biopsy, especially for that morphology not typical for primary @entity420 or @entity46 . Reading slides carefully combined with a panel of immunomarkers would solve the pitfall.
