title: [Percutaneous renal mass biopsy after indeterminate diagnostic imaging results].
abstract: We conducted a retrospective study to examine the efficacy of renal mass biopsies in our hospital. Twenty-six patients (18 male, 8 female ; median age, 69 years ; range, 42-85 years) with renal masses were divided into two groups. Group 1 (n＝9) underwent renal mass biopsies after completion of diagnostic imaging tests that needed a pathological diagnosis before treatment other than extirpative surgery, and group 2 (n＝17) underwent renal mass biopsies after completion of indeterminate diagnostic imaging tests that did not rule out malignancy. The median tumor size was 2.8cm (range, 0.8-15 cm), and the median number of biopsy cores obtained was two (range, 2-4). There were no biopsy-associated complications that required intervention. In group 1, 100% (9 of 9) of the renal mass biopsies were diagnostic, and the pathological findings corresponded to the respective diagnosis obtained by imaging tests, most of which were clear cell carcinoma. In group 2, 59% (10 of 17) of the biopsies were diagnostic. The imaging characteristics of the seven nondiagnostic biopsies in group 2 were low blood flow and poor peripheral clarity. On the other hand, renal mass biopsies were indispensable for some patients in group 2 in whom the pathological findings led to a decision of treatment strategy. In conclusion, renal mass biopsies should be considered in view of their ability to compensate for limitations of imaging tests and their low frequency of complications.
authors: The Department of Urology, Japanese Red Cross Otsu Hospital.
authors: Atsushi
authors: A
authors: Sengiku
authors: Harutake
authors: H
authors: Sawazaki
authors: Masaaki
authors: M
authors: Imamura
authors: Takeshi
authors: T
authors: Takahashi
authors: Tomoyuki
authors: T
authors: Shirase
authors: Hisato
authors: H
authors: Kobayashi
authors: Keiji
authors: K
authors: Ogura
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D002292:Carcinoma, Renal Cell / Q000175:diagnosis / Q000473:pathology; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed