Pereiras, R V Fluoroscopically guided thin needle aspiration biopsy of the abdomen and retroperitoneum. [electronic resource] - AJR. American journal of roentgenology Aug 1978 - 197-202 p. digital Publication Type: Journal Article ISSN: 0361-803X Standard No.: 10.2214/ajr.131.2.197 doi Subjects--Topical Terms: Abdominal Neoplasms--diagnosisAdultAgedBiopsy, NeedleFemaleFluoroscopyHumansMaleMiddle AgedRetroperitoneal Neoplasms--diagnosis