Cytologic criteria for an "adequate" specimen during TBNA

Bronchial epithelial cells should be absent or rare.

A preponderance of lymphocytes should be found.

Strict criteria for cytologic diagnosis of malignancy should be established and adhered to, and all samples should be classified as negative, suspicious, or definitely malignant.

Only samples showing no evidence of pathology in the presence of lymphocytes should be considered true negatives.

Criteria_for_adequate_speci.htm

Reproduced with permission from Minai, OA, Dasgupta, A, Mehta, AC. Transbronchial needle aspiration of central and peripheral lesions. In: Bolliger, CT, Mathur, PN (Eds), Progress in Respiratory Research-Interventional Bronchoscopy. Karger, Basel, Switzerland, 1999.

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Cytologic criteria for an "adequate" specimen during TBNA