Malignant tumors
A tumor is considered malignant if it has the potential to invade or spread to other tissues.
Spindle Cell Carcinoma (Carcinosarcoma)
Benign tumors
A tumor is considered benign if it doesn’t pose the threat of invading or spreading to other tissues.
Paraglottic Mass and Birt–Hogg–Dubé (BHD) Syndrome
Recurrent respiratory papillomatosis
Caused by human papillomavirus (HPV)