Parachordoma--a clinicopathologic, immunohistochemical, electron microscopic, flow cytometric, and cytogenetic study.
A case of parachordoma in a 45-year-old female was described. Histologically, the recurrent lesion, in comparison with the primary tumor, demonstrated an increased cellular atypia and mitotic rate. The tumor cells expressed EMA, vimentin, S 100 protein, and also a trace desmin content was present. Electron microscopic study provided no characteristic features of the tumor type studied. Flow cytometric evaluation of the DNA demonstrated a diploid histogram with the relatively high S-phase. Cytogenetic analysis revealed normal karyotype, but a deviation from the diploid state in the form of aneuploid metaphases with non-clonal structural chromosomal aberrations was observed.
Department of Pathology, Oncology Centre, Cracow, Poland.
A
A
Niezabitowski
J
J
Limon
A
A
Wasilewska
J
J
Rys
B
B
Lackowska
B
B
Nedoszytko
D002817:Chordoma / Q000737:chemistry / Q000235:genetics / Q000473:pathology*; D002869:Chromosome Aberrations; D004273:DNA, Neoplasm / Q000032:analysis; D005260:Female; D005434:Flow Cytometry; D006225:Hand; D006801:Humans; D007150:Immunohistochemistry; D007381:Intermediate Filament Proteins / Q000032:analysis; D007621:Karyotyping; D008854:Microscopy, Electron; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D012983:Soft Tissue Neoplasms / Q000737:chemistry / Q000235:genetics / Q000473:pathology*
D004273:DNA, Neoplasm; D007381:Intermediate Filament Proteins