Extra-salivary gland presentations of adenoid cystic carcinoma: a report of three cases.

Adenoid cystic carcinoma (ACC) is a malignant neoplasm most commonly originating in salivary glands of the head and neck area. When ACC presents outside of these locations, the diagnosis may become more challenging. We describe three cases of ACC presenting in extra-salivary gland sites.

The cytological and clinical value of the thyroid "follicular lesion".

Background: The main limitation of fine-needle aspiration (FNA) is its limited distinction between neoplastic and benign lesions. We summarize our experience with thyroid nodules that were defined as follicular lesions by comparing the clinical and cytological features of the thyroid follicular lesions that were examined histologically to define the most reliable criteria of malignancy.

Methods: The medical records of all patients who underwent thyroid aspiration at Rabin Medical Center from 1999 to 2000 were reviewed for a diagnosis of follicular lesion that warranted surgery (N = 58).