- anauxetic dysplasia [DOID:0080942]
A spondyloepimetaphyseal dysplasia that is characterized by the prenatal onset of extreme short stature, an adult height of less than 85 cm, hypodontia, and mild mental retardation.
- spitzoid melanoma [DOID:0070326]
A skin melanoma that is characterized by asymmetric shape, diameter greater than 1 cm, a lesion with a deep invasive component, and a high degree of cytologic atypia.
- erythema nodosum [DOID:0080750]
A panniculitis that is characterized by sudden onset of painful, erythematous, subcutaneous nodules mainly localized to the pretibial areas. Lesions are usually bilateral and symmetrical, ranging from 1 to 5 cm in diameter.
- large congenital melanocytic nevus [DOID:0111359]
A skin disease characterized by the presence at birth of a pigmented skin lesion composed of melanocytes of more than 20 cm in projected adult diameter that has_material_basis_in somatic mutation in the NRAS gene on chromosome 11p15.5.
- solitary mastocytoma of the skin [DOID:3666]
A mast cell neoplasm that is characterized by collections of mast cells with a single or multiple (usually five or fewer individual) orange-brown to red-brown plaques or nodules ranging from 0.5 to 3.5 cm in diameter.