page_title: List of skin conditions
section_title: Dermal and subcutaneous growths
hierarchical_section_title: List of skin conditions / Dermal and subcutaneous growths
caption_attribution_description: Deutsch: Verbrennungsnarbe Keloid
context_page_description: Many conditions affect the human integumentary system—the organ system covering the entire surface of the body and composed of skin, hair, nails, and related muscle and glands. The major function of this system is as a barrier against the external environment. The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles, and hair-bearing skin. Within the latter type, the hairs occur in structures called pilosebaceous units, each with hair follicle, sebaceous gland, and associated arrector pili muscle. In the embryo, the epidermis, hair, and glands form from the ectoderm, which is chemically influenced by the underlying mesoderm that forms the dermis and subcutaneous tissues.
  The epidermis is the most superficial layer of skin, a squamous epithelium with several strata: the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale. Nourishment is provided to these layers by diffusion from the dermis, since the epidermis is without direct blood supply.
context_section_description: Dermal and subcutaneous growths result from (1) reactive or neoplastic proliferation of cellular components of the dermis or subcutaneous tissue, or (2) neoplasms invading or aberrantly present in the dermis.
  Acquired progressive lymphangioma (benign lymphangioendothelioma)
  Acral arteriolar ectasia
  Acral fibrokeratoma (acquired digital fibrokeratoma, acquired periungual fibrokeratoma)
  Acrochordon (cutaneous papilloma, cutaneous tag, fibroepithelial polyp, fibroma molluscum, fibroma pendulum, papilloma colli, skin tag, soft fibroma, Templeton skin tag)
  Adenoma sebaceum
  Adult type of generalized eruption of cutaneous mastocytosis
  African cutaneous Kaposi sarcoma 
  African lymphadenopathic Kaposi sarcoma
  Aggressive infantile fibromatosis
  AIDS-associated Kaposi sarcoma
  Ainhum (bankokerend, dactylolysis spontanea, sukhapakla)
  Angiofibroma
  Angiokeratoma
  Angiokeratoma of Fordyce (angiokeratoma of the scrotum and vulva)
  Angiokeratoma of Mibelli (Mibelli's angiokeratoma, telangiectatic warts)
  Angioleiomyoma (vascular leiomyoma)
  Angiolipoleiomyoma
  Angiolipoma
  Angioma serpiginosum
  Angiosarcoma
  Aponeurotic fibroma (calcifying aponeurotic fibroma, juvenile aponeurotic fibroma)
  Atypical fibroxanthoma
  Benign lipoblastomatosis (embryonic lipoma)
  Buschke–Ollendorff syndrome (dermatofibrosis lenticularis disseminata)
  Capillary aneurysms
  Carcinoid
  Cherry angioma (De Morgan spot, senile angioma)
  Chondrodermatitis nodularis chronica helicis (chondrodermatitis nodularis helicis) 
  Chondroid lipoma
  Chordoma
  Classic Kaposi sarcoma
  Collagenous fibroma (desmoplastic fibroblastoma)
  Composite hemangioendothelioma
  Connective tissue nevus (collagenoma, elastoma, shagreen patch)
  Cutaneous endometriosis
  Cutaneous meningioma (heterotopic meningeal tissue, rudimentary meningocele)
  Cutaneous myelofibrosis
  Cutaneous myxoma
  Cutis marmorata telangiectatica congenita (congenital generalized phlebectasia, Van Lohuizen syndrome)
  Dermal dendrocyte hamartoma
  Dermatofibroma (benign fibrous histiocytoma, dermal dendrocytoma, fibrous dermatofibroma, fibrous histiocytoma, fibroma simplex, histiocytoma, nodular subepidermal fibrosis, sclerosing hemangioma)
  Dermatofibrosarcoma protuberans
  Desmoid tumor
  Diffuse cutaneous mastocytosis
  Diffuse infantile fibromatosis
  Dupuytren's contracture (Dupuytren's diathesis, Dupuytren's disease, palmar fibromatosis)
  Eccrine angiomatous hamartoma
  Elastofibroma dorsi
  Endovascular papillary angioendothelioma (Dabska tumor, Dabska-type hemangioendothelioma, hobnail hemangioendothelioma, malignant endovascular papillary angioendothelioma, papillary intralymphatic angioendothelioma)
  Epithelioid cell histiocytoma
  Epithelioid hemangioendothelioma
  Epithelioid sarcoma
  Erythrodermic mastocytosis
  Extraskeletal chondroma (chondroma of soft parts)
  Familial myxovascular fibromas
  Fascial hernia
  Fibroma of tendon sheath
  Fibromatosis colli (sternomastoid tumor of infancy)
  Fibrous hamartoma of infancy
  Fibrous papule of the nose (benign solitary fibrous papule, fibrous papule of the face)
  Folded skin with scarring (Michelin tire baby syndrome)
  Fordyce's spot (Fordyce's disease)
  Ganglion cyst
  Ganglioneuroma
  Genital leiomyoma (dartoic leiomyoma)
  Giant cell fibroblastoma
  Giant cell tumor of the tendon sheath (giant cell synovioma, localized nodular tenosynovitis, pigmented villonodular synovitis)
  Glomeruloid hemangioma 
  Glomus tumor (glomangioma, solid glomus tumor, solitary glomus tumor)
  Granular cell tumor (Abrikossoff's tumor, Abrikossov's tumor, granular cell myoblastoma, granular cell nerve sheath tumor, granular cell schwannoma)
  Hamartoma
  Hemangiopericytoma
  Hemangiosarcoma
  Hibernoma (fetal lipoma, lipoma of embryonic fat, lipoma of immature adipose tissue)
  Hypertrophic scar
  Immunosuppression-associated Kaposi sarcoma
  Infantile digital fibromatosis (inclusion body fibromatosis, infantile digital myofibroblastoma, Reye tumor)
  Infantile hemangiopericytoma (congenital hemangiopericytoma)
  Infantile myofibromatosis (congenital generalized fibromatosis, congenital multicentric fibromatosis)
  Infantile systemic hyalinosis (juvenile systemic hyalinosis)
  Intrader
caption: Keloid
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