(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsWhippleBile ductIslets of LangerhansPancreatitisPanINIPMNAcinarSolid pseudopapillaryPerpendicular marginEn face marginShave margin The Normal Pancreas The normal pancreas is a…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsChorioamnionitisMeconiumPreeclampsiaTorchVilliTrophoblastAmnionChorionUmbilical The gestational sac begins as a spherical structure, with the fetus surrounded by an amnion, a…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsPleomorphic adenomaAcinic cellAdenoid cysticMucoepidermoidSjögrenSialadenitisMammary analogueParotidSubmandibularSublingualWarthin tumor With the exception of pleomorphic adenoma , salivary gland neoplasms are…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsThymomaThymic carcinomaTeratomaGerm cell tumorLymphomaBronchogenic cyst The thymus is a lymphoepithelial organ in the anterior mediastinum and is the…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsSertoliLeydigSeminomaSpermatocyticYolk sacEmbryonalTeratomaChoriocarcinoma The testis is not a common specimen. Resections in children or young adults may be…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsUrotheliumTransitionalVon Brunn’s nestPapillaryCarcinoma in situPapillomaNephrogenic adenoma Bladder biopsy specimens are usually submitted to rule out a urothelial…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsSquamousUrotheliumHyperplasiaMetaplasiaDysplasiaCarcinoma in situInvasion Complex, or multilayered, epithelia (squamous and urothelial) may progress through a spectrum of changes,…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsCellularityArchitectureNucleusCytoplasmNecrosisAdjectives The ability to speak the language is essential to effective learning in pathology. This chapter covers…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsBarrett’sGoblet cellsIntestinal metaplasiaDysplasiaEsophagitis The esophagus is composed of a nonkeratinized squamous epithelium overlying a thin lamina propria…

(1) Department of Pathology, Sinai Hospital of Baltimore Pathology, Baltimore, MD, USA   KeywordsCytokeratinMelanomaCarcinomaSarcomaLymphomaMesotheliomaGerm cell tumorVascularNeuralMyoepithelial The use of immunostains is a highly complex field in and of itself and…