title: Primary amyloid tumor (amyloidoma) of the jejunum with spheroid type of amyloid.
abstract: The present report documents an incidentally discovered, solitary amyloidoma of the jejunum in a 70 year old man with no predisposing disorder or other sites of deposition of amyloid, as was demonstrated at autopsy. Amyloid tumors of the intestine have been reported only rarely. In those reports the deposits were conventional in type, forming large masses of acellular, eosinophilic, homogeneous material. In the case described here the deposits were in the form of corpora amylacea-like structures, or spheroids. To the best of our knowledge, the corpora amylacea-like structures, or spheroid amyloid, have not been previously described in bowel amyloidoma. This rare form of amyloid deposition should be recognized so as to prevent misdiagnosis.
authors.affiliation: Department of Anatomical Pathology, Marqués de Valdecilla University Hospital, Medical Faculty, University of Cantabria, Santander, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Acebo
authors.forename: M
authors.initials: M
authors.lastname: Mayorga
authors.forename: J
authors.initials: J
authors.lastname: Fernando Val-Bernal
mesh_terms: D000368:Aged; D000682:Amyloid / Q000737:chemistry / Q000648:ultrastructure*; D000686:Amyloidosis / Q000473:pathology*; D015415:Biomarkers / Q000032:analysis; D001718:Birefringence; D003224:Congo Red; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D007579:Jejunal Diseases / Q000473:pathology*; D007580:Jejunal Neoplasms / Q000473:pathology*; D008297:Male
chemical_list: D000682:Amyloid; D015415:Biomarkers; D003224:Congo Red