Intra-abdominal follicular dendritic cell sarcoma with marked pleomorphic features and aberrant expression of neuroendocrine markers: report of a case with immunohistochemical analysis.
Appl Immunohistochem Mol Morphol
; 15(3): 346-52, 2007 Sep.
Article
en En
| MEDLINE
| ID: mdl-17721283
Follicular dendritic cell sarcoma (FDCS) is a very rare malignant tumor arising most frequently in lymph nodes with only few reports of extranodal locations. We report the case of a 35-year-old man with a large retroperitoneal mass. Histologically the tumor was composed of highly pleomorphic cells exhibiting some uncommon features such as an epithelioid appearance, cystic spaces, and multinucleated cells with morphologic features of emperipolesis. Immunohistochemically the neoplastic cells were immunoreactive for CD21, CD23 and CD35. A previously unreported expression of neuroendocrine markers (Synaptophisyn and Neuron-Specific-Enolase) was present. Ultrastructurally no neuroendocrine secretory granules were detected. FDCS can mimic a wide variety of other malignant tumors, and a correct diagnosis requires exclusion of other neoplasms and immunohistochemical confirmation.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sarcoma
/
Biomarcadores de Tumor
/
Células Dendríticas Foliculares
/
Neoplasias Abdominales
Tipo de estudio:
Diagnostic_studies
Límite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Appl Immunohistochem Mol Morphol
Asunto de la revista:
BIOLOGIA MOLECULAR
/
HISTOCITOQUIMICA
Año:
2007
Tipo del documento:
Article
País de afiliación:
México
Pais de publicación:
Estados Unidos