Percutaneous transperitoneal aspiration of renal adenocarcinoma guided by ultrasound. Morphologic appearance of normal and malignant cells.

An aspiration guided by ultrasound of a clear cell renal adenocarcinoma provided abundant, well-preserved material. Surgical specimens of the granular and sarcomatoid (spindle cell) varieties of renal adenocarcinoma were aspirated with the same gauge needle as that of the Chiba University. The cytomorphologic appearances of these entities are described.