Fine needle aspiration cytology of a recurrent malignant tumor of the kidney with rhabdoid features in an adult. A case report.
BACKGROUND
Malignant rhabdoid tumor of the kidney in children is considered a distinct entity. Malignant tumors with rhabdoid features in adults in extrarenal locations and in children over the age of 5 years are considered phenotypic variants.


METHODS
In a case of recurrent transitional cell carcinoma with rhabdoid features of the kidney in an adult, confirmed immunohistochemically and ultrastructurally, fine needle aspiration cytology showed discohesive, large- to medium-sized polygonal cells with eccentric nuclei; prominent nucleoli; abundant, pink cytoplasm; and paranuclear, eosinophilic density, corresponding to cytoplasmic eosinophilic globules seen in the histologic sections and cytoplasmic filamentous inclusions seen ultrastructurally.


CONCLUSIONS
The cytologic features of malignant rhabdoid tumors are characteristic.
Yusuf
Y
Y
Department of Pathology, Metropolitan Hospital/New York Medical College, New York 10029, USA.
Belmonte
A H
AH
Tchertkoff
V
V
D001707:Biopsy, Needle; D002295:Carcinoma, Transitional Cell / Q000473:pathology*; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D009392:Nephrectomy; D018335:Rhabdoid Tumor / Q000473:pathology*