Breast cyst aspiration.

The breast mass is a clinical problem commonly encountered by family physicians. Fine-needle and core biopsy techniques require training and cytopathologist support. In contrast, breast cyst aspiration using a 21- or 22-gauge needle is a simple, cost-effective, minimally invasive procedure. The technique is easy to learn and can be practiced on a breast model. Breast cyst aspiration may be attempted in many women who present with a palpable, dominant breast mass. If clear fluid is aspirated and the mass resolves, malignancy is unlikely, and breast cyst is the probable diagnosis. In this situation, reevaluation in four to six weeks is appropriate; if the cyst has not recurred, only routine mammographic surveillance is required. Referral for fine-needle or excisional biopsy is indicated if the aspirate is bloody or extremely tenacious, if no fluid can be aspirated, or if there is residual mass after aspiration. Complications such as local discomfort, bruising, and infection are uncommon.