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Specialty. Dermatology, general surgery. A sebaceous cyst is a term commonly used to refer to either: [1] Epidermoid cysts (also termed epidermal cysts, infundibular cyst) Pilar cysts (also termed trichelemmal cysts, isthmus-catagen cysts) Both of the above types of cysts contain keratin, not sebum, and neither originates from sebaceous glands.
Thyroglossal cyst. A thyroglossal cyst or thyroglossal duct cyst is a fibrous cyst that forms from a persistent thyroglossal duct. Thyroglossal cysts can be defined as an irregular neck mass or a lump which develops from cells and tissues left over after the formation of the thyroid gland during developmental stages. [1]
Frank's sign is a diagonal crease in the ear lobe extending from the tragus across the lobule to the rear edge of the auricle. [1] The sign is named after Sanders T. Frank. [1] It has been hypothesised that Frank's sign is indicative of cardiovascular disease [2][3] and/or diabetes. [4] Some studies have described Frank's sign as a marker of ...
Surfer's ear. Surfer's ear is the common name for an exostosis or abnormal bone growth within the ear canal. They are otherwise benign hyperplasias (growths) of the tympanic bone thought to be caused by frequent cold-water exposure. [1] Cases are often asymptomatic. [1] Surfer's ear is not the same as swimmer's ear, although infection can ...
Pleomorphic adenoma (or benign mixed tumor) is a common benign salivary gland neoplasm characterised by neoplastic proliferation of epithelial (ductal) cells along with myoepithelial components, having a malignant potentiality. It is the most common type of salivary gland tumor and the most common tumor of the parotid gland.
16,900 (2015) [8] Cellulitis is usually [9] a bacterial infection involving the inner layers of the skin. [1] It specifically affects the dermis and subcutaneous fat. [1] Signs and symptoms include an area of redness which increases in size over a few days. [1] The borders of the area of redness are generally not sharp and the skin may be ...
Causes. Cobblestone throat occurs when there's swelling and inflammation in the tonsils and adenoids. These glands sit at the back of the throat and protect the respiratory passages from viruses ...
Rheumatology, Immunology. Relapsing polychondritis is a systemic disease characterized by repeated episodes of inflammation and in some cases deterioration of cartilage. The disease can be life-threatening if the respiratory tract, heart valves, or blood vessels are affected. The exact mechanism is poorly understood.