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A thin arborizing vascular network, a large myxoid stroma, mild to moderate cellularity with spindled to stellate cells with little or mild atypia, and the lack of nuclear pleomorphism or mitotic activity are among the histologic markers that are consistently present in cutaneous myxoma. [10]
Prominent inferior labial artery, also known as caliber-persistent labial artery is characterized by the appearance of a pulsating papule in the lower vermilion, a centimeter of two from the oral comissure, formed by an especially tortuous segment of the inferior labial artery.
One type is characterized by generalized, persistent, brown hyperkeratosis with accentuated skin markings, while a second type is localized, with involvement that is limited in extent and characterized by sharply demarcated, hyperkeratotic plaques. [2] [6]: 565 It can be associated with GJB3 [7] and GJB4. [8] It was characterized in 1925. [9]
A little over 1 in 10 babies have a vascular birthmark present by age 1. [2] Several birthmark types are part of the group of skin lesions known as nevi or naevi, which is Latin for "birthmarks". Birthmarks occur as a result of a localized imbalance in factors controlling the development and migration of skin cells .
Angiofibroma of soft tissue tumors consist of uniform, bland, spindle-shaped cells and a prominent vascular network consisting of small thin-walled branching blood vessels in a variably collagenous tissue background. Its tumor cells contain an AHRR-NCOA2 fusion gene in 60% to 80% of cases and a GTF2I-NCOA2 or GAB1-ABL1 fusion gene in rare cases ...
Angiokeratoma of Fordyce (also known as "Angiokeratoma of the scrotum and vulva," though not to be confused with Fordyce's spots) [5] is a skin condition characterized by red to blue papules on the scrotum or vulva. Solitary angiokeratoma is a small, bluish-black, warty papule that occurs predominantly on the lower extremities. [5]: 590
Angioleiomyoma (vascular leiomyoma, angiomyoma) of the skin is thought to arise from vascular smooth muscle, and is generally acquired. [3] Angioleiomyomas appear as small (<2 cm), firm, movable, slow growing subcutaneous nodules. Pain is a common symptom. They are most commonly seen on the extremities. The cause of angioleiomyoma is unknown.
Pilomatricoma is a benign skin tumor derived from the hair matrix. [ 2 ] [ 3 ] These neoplasms are relatively uncommon and typically occur on the scalp, face, and upper extremities. Clinically, pilomatricomas present as a subcutaneous nodule or cyst with unremarkable overlying epidermis that can range in size from 0.5 to 3.0 cm, but the largest ...