title: Atypical teratoid/rhabdoid tumor: analysis of cytomorphologic features in CSF, focused on the differential diagnosis from mimickers.
abstract: Atypical teratoid and rhabdoid tumor (AT/RT) is a rare tumor with fatal clinical consequences, usually affecting young children. A significant portion of patients present with dissemination to cerebrobspinal fluid (CSF). However, a limited number of studies are available regarding the cytomorphologic findings of AT/RT in CSF. We collected eight cases of CSF cytology of AT/RT and describe the cytomorphologic features of AT/RT in CSF. Typical rhabdoid cells are found in most cases and they are characterized by eccentric nuclei, abundant cytoplasm, and clustering of the tumor cells. The presence of these cells in CSF indicates disseminated diseases and aggressive therapeutic consideration for patient management is required.
authors.affiliation: Department of Pathology, Yonsei University College of Medicine, Seongsanno 250 Seodaemun-Ku, Seoul, 120-752, Republic of Korea.
authors.forename: Junjeong
authors.initials: J
authors.lastname: Choi
authors.forename: Hoguen
authors.initials: H
authors.lastname: Kim
authors.forename: Se Hoon
authors.initials: SH
authors.lastname: Kim
mesh_terms: D002467:Cell Nucleus / Q000473:pathology; D002675:Child, Preschool; D003581:Cytodiagnosis / Q000379:methods; D003593:Cytoplasm / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007223:Infant; D008297:Male; D008527:Medulloblastoma / Q000134:cerebrospinal fluid / Q000175:diagnosis / Q000473:pathology; D018335:Rhabdoid Tumor / Q000134:cerebrospinal fluid* / Q000175:diagnosis / Q000473:pathology; D013724:Teratoma / Q000134:cerebrospinal fluid* / Q000175:diagnosis / Q000473:pathology