経皮吸引生検法による腎腫瘍の細胞診

抄録

Aspiration cytology was performed in ten patientsof renal tumors, consisting of seven patients of renalcell carcinoma and three of pelvic transitional cellcarcinoma.
Specimens from8of them (80%) were adequate forcytological diagnosis.
Because these two tumor groupshad specific cytological features, respectively, therenal tumors were easily differentiated. Cytologicalspecimens obtained by open aspiration biopsy and bydirect stamping of the tumors further verified thesefindings.
Urinary sediments were examined cytologically in13patients of renal tumors, comprising nine patientsof renal cell carcinoma and four of pelvic transitionalcell carcinoma. Atypical cells were detected only in6of them (46%).
In this study, percutaneous aspiration cytodiagnosiswas proved to be a valuable method to differentiaterenal malignancies preoperatively.
Fat stain with Oil Red-O was applied to the cytological specimens obtained by aspiration biopsy andurinary sediments.
Oil Red-O positive cytoplasmicgranules were observed in 10 of 17 specimens fromthe patients of renal cell carcinoma and 1 of 11 specimens from the patients of pelvic transitional cellcarcinoma.
The positive specimen from the lattergroup was a smear of urinary sediment from a patient of renal pelvic tumor.
This fact suggests that thefat stain is not specific for renal cell carcinoma only.