Dermatologists are doctors who diagnose and treat diseases and tumors of the skin, hair, and sweat glands.

He also wants to speed the use of M.R.I. to replace X-ray mammographies and to diagnose gastrointestinal tumors.

Designed to noninvasively diagnose malignant cancerous tumors, it successfully detected over 99% of malignant breast tumors in a test set.

Among the earliest uses are these: *Biopsying lung tissue to diagnose infections and benign and cancerous tumors and to cut out some of them.

An MRS is used to diagnose tumors, based on their chemical make-up.

Early in his career, he established a clinic in which radioactive iodine was used to help diagnose and detect tumors in patients with hyperthyroidism and thyroid cancer.

Doctors also said they were concerned about the rate of malpractice lawsuits against breast cancer specialists who fail to diagnose tumors after studying a mammogram.

Cardiac magnetic resonance imaging (MRI) can help non-invasively diagnose cardiac tumors.

"The biggest obstacle in diagnosing carcinoid tumors is not thinking of them," says Richard Warner, MD, professor of medicine at the Mount Sinai School of Medicine and medical director of the Carcinoid Cancer Foundation.

The procedure, called bronchoscopy, is a common test to diagnose lung infections and tumors, and it is performed under a local anesthetic like Lidocaine.