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Cutaneous adnexal tumors are a large group of skin tumors that consist of tissues that have differentiated (i.e. matured from stem cells) towards one of the four primary adnexal structures found in normal skin: hair follicles, sebaceous sweat glands, apocrine sweat glands, and eccrine sweat glands. [3] CCS tumors are hair follicle tumors. [2]
A hemangioma or haemangioma is a usually benign vascular tumor derived from blood vessel cell types. The most common form, seen in infants, is an infantile hemangioma, known colloquially as a "strawberry mark", most commonly presenting on the skin at birth or in the first weeks of life. A hemangioma can occur anywhere on the body, but most ...
It is the most common tumor of orbit and periorbital areas in childhood. It may occur in the skin, subcutaneous tissues and mucous membranes of oral cavities and lips as well as in extracutaneous locations including the liver and gastrointestinal tract. The underlying reason for their occurrence is not clear. [1]
A pyogenic granuloma or lobular capillary hemangioma [3] is a vascular tumor that occurs on both mucosa and skin, and appears as an overgrowth of tissue due to irritation, physical trauma, or hormonal factors. [4] [5] It is often found to involve the gums, skin, or nasal septum, and has also been found far from the head, such as in the thigh. [6]
Cutaneous leiomyoma, also known as leiomyoma cutis, [1] or cutaneous leiomyomata, [2] is a benign skin tumor made of smooth muscle cells. [3] There are three different types of cutaneous leiomyomas, genital leiomyomas, angioleiomyomas, and piloleiomyomas. Cutaneous leiomyomas can occur sporadically or as a part of a genetic condition.
The tumor may be in the form of a hard plaque or a papule, often with an opalescent quality, with tiny blood vessels; The tumor can lie below the level of the surrounding skin, and eventually ulcerates and invades the underlying tissue; The tumor commonly presents on sun-exposed areas (e.g. back of the hand, scalp, lip, and superior surface of ...
Tufted angioma is defined as a single tumor in the skin of the neck, upper trunk, or extremities that appears erythematous, macula, or plaque-like. [3] Common accompanying symptoms include soreness and pain, and hyperhidrosis is a common finding that affects 30% of individuals. [4] The size ranges from one centimeter to ten centimeters. [5]
Keratoacanthoma is commonly found on sun-exposed skin, often face, forearms and hands. [2] [3] It is rarely found at a mucocutaneous junction or on mucous membranes. [2] Keratoacanthoma may be difficult to distinguish visually from a skin cancer. [4] Under the microscope, keratoacanthoma very closely resembles squamous cell carcinoma. In order ...