Fine‐needle aspiration cytology of superficial lymph nodes

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Abstract
A series of 244 enlarged superficial lymph nodes was examined by fine‐needle aspiration cytology. Twenty‐nine smears (11.9%) were inadequate for study. Of the remaining 215, 108 were negative, 13 suspicious for malignancy, and 94 positive. Forty‐five excisional biopsies were performed correlating the cytologic and histologic findings. There were two cytologic false‐negative results; both were patients who had been treated for carcinoma and whose aspirates were cytologically negative. Of the 13 samples reported as suspicious for malignancy, there were three epidermoid carcinomas, nine reactive hyperplasias, and one non‐Hodgkin's lymphocytic lymphoma. Of the positive cases, 83 were metastatic tumors, and 11 were malignant lymphomas (two non‐Hodgkin's lymphomas and nine Hodgkin's lymphomas). The criteria used in the interpetration of these aspirates and the problems of differential cytological diagnosis are discussed. In spite of the drawbacks of inadequate and false‐negative smears, fine‐needle aspiration cytology is valuable in preliminary diagnosis of diseased lymph nodes and subsequent management.