Epidermoid Lipoma, fibroma, neurofibroma Keloid Goiter (with or without thyroid hormone disturbance) Osteochondroma Teratoma (may be malignant) Malignant Lymphoma—Hodgkin disease, non-Hodgkin lymphoma Leukemia Other—rhabdomyosarcoma, neuroblastoma, histiocytosis X, nasopharyngeal squamous cell carcinoma, thyroid, or salivary gland tumor “Normal” anatomy or variant