Tumours are composed of multiple large foci and nests or sheets of cells with hyperchromatic nuclei and abundant clear to eosinophilic cytoplasm. Cellular pleomorphism and cytologic atypia are present to varying degrees and are much more prevalent than in sebaceous adenomas. Squamous differentiation is common. There may be areas of basa-loid differentiation, particularly at the periphery of cellular nests. Areas of necrosis and fibrosis are common. Perineural invasion is seen in greater than 20% of tumours; vascular invasion is infrequent. Rare oncocytes and foreign body giant cells with histiocytes may be observed, but lymphoid tissue with follicles or subcapsular sinuses is not seen.

Was this article helpful?

0 0
10 Ways To Fight Off Cancer

10 Ways To Fight Off Cancer

Learning About 10 Ways Fight Off Cancer Can Have Amazing Benefits For Your Life The Best Tips On How To Keep This Killer At Bay Discovering that you or a loved one has cancer can be utterly terrifying. All the same, once you comprehend the causes of cancer and learn how to reverse those causes, you or your loved one may have more than a fighting chance of beating out cancer.

Get My Free Ebook

Post a comment