Source:http://linkedlifedata.com/resource/umls/id/C0683440
CSP: microscopic examination of cells desquamated from a body surface or lesion as a means of detecting malignancy to measure hormonal levels, etc; such cells may be obtained by such procedures as aspiration, washing, smear, and scraping, and the technique may be applied to vaginal secretions, sputum, urine, abdominal fluid, prostatic secretion, etc.