Fine needle aspiration biopsy of abdominal masses.
D000008:Abdominal Neoplasms / Q000175:diagnosis*; D000368:Aged; D001707:Biopsy, Needle / Q000379:methods*; D005471:Fluoroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D014057:Tomography, X-Ray Computed; D014465:Ultrasonics