title: Determination of primary site by examination of cancer cells in body fluids.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D000328:Adult; D000368:Aged; D001202:Ascitic Fluid / Q000166:cytology*; D001943:Breast Neoplasms / Q000175:diagnosis; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D003110:Colonic Neoplasms / Q000175:diagnosis; D003581:Cytodiagnosis; D005260:Female; D005706:Gallbladder Neoplasms / Q000175:diagnosis; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis; D005833:Genital Neoplasms, Female / Q000175:diagnosis; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis; D008175:Lung Neoplasms / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000175:diagnosis*; D010051:Ovarian Neoplasms / Q000175:diagnosis; D010190:Pancreatic Neoplasms / Q000175:diagnosis; D010996:Pleural Effusion / Q000166:cytology*; D013274:Stomach Neoplasms / Q000175:diagnosis; D013964:Thyroid Neoplasms / Q000175:diagnosis; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis; D014594:Uterine Neoplasms / Q000175:diagnosis; D014626:Vaginal Smears