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Items: 7

1.

Malignant melanoma

A malignant neoplasm derived from cells that are capable of forming melanin, which may occur in the skin of any part of the body, in the eye, or, rarely, in the mucous membranes of the genitalia, anus, oral cavity, or other sites. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. Melanomas frequently metastasize widely, and the regional lymph nodes, liver, lungs, and brain are likely to be involved. The incidence of malignant skin melanomas is rising rapidly in all parts of the world. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445) [from MeSH]

MedGen UID:
9944
Concept ID:
C0025202
Neoplastic Process
2.

Melanoma

The presence of a melanoma, a malignant cancer originating from pigment producing melanocytes. Melanoma can originate from the skin or the pigmented layers of the eye (the uvea). [from HPO]

MedGen UID:
505377
Concept ID:
CN002586
Finding
3.

Cutaneous malignant melanoma 1

Malignant melanoma is a neoplasm of pigment-producing cells called melanocytes that occurs most often in the skin, but may also occur in the eyes, ears, gastrointestinal tract, leptomeninges, and oral and genital mucous membranes (summary by Habif, 2010). Genetic Heterogeneity of Susceptibility to Cutaneous Malignant Melanoma The locus for susceptibility to familial cutaneous malignant melanoma-1 (CMM1) has been mapped to chromosome 1p36. Other CMM susceptibility loci include CMM2 (155601), caused by variation in the CDKN2A gene (600160) on chromosome 9p21; CMM3 (609048), caused by variation in the CDK4 gene (123829) on chromosome 12q14; CMM4 (608035), mapped to chromosome 1p22; CMM5 (613099), caused by variation in the MC1R gene (155555) on chromosome 16q24; CMM6 (613972), caused by variation in the XRCC3 gene (600675) on chromosome 14q32; CMM7 (612263), mapped to chromosome 20q11; CMM8 (614456), caused by variation in the MITF gene (156845) on chromosome 3p13; CMM9 (615134), caused by variation in the TERT gene (187270) on chromosome 5p15; and CMM10 (615848), caused by mutation in the POT1 gene (606478) on chromosome 7q31. Somatic mutations causing malignant melanoma have also been identified in several genes, including BRAF (164757), STK11 (602216), PTEN (601728), TRRAP (603015), DCC (120470), GRIN2A (138253), ZNF831, BAP1 (603089), and RASA2 (601589). A large percentage of melanomas (40-60%) carry an activating somatic mutation in the BRAF gene, most often V600E (164757.0001) (Davies et al., 2002; Pollock et al., 2003). [from GTR]

MedGen UID:
320506
Concept ID:
C1835047
Finding
4.

Desmoplastic

This term refers to the growth of fibrous or connective tissue. Some tumors elicit a desmoplastic reaction, the pervasive growth of dense fibrous tissue around the tumor. Scar tissue (adhesion) within the abdomen after abdominal surgery is another type of desmoplastic reaction. (MedicineNet.com) [from NCI]

MedGen UID:
307421
Concept ID:
C1511789
Disease or Syndrome
5.

Desmoplastic Melanoma

A melanoma of the skin characterized by a proliferation of atypical spindled melanocytes in the dermis, in a background of abundant collagen. It usually presents as an amelanotic raised nodular lesion. [from NCI]

MedGen UID:
232127
Concept ID:
C1333280
Neoplastic Process
6.

Perineurial Malignant Peripheral Nerve Sheath Tumor

A very rare malignant tumor with morphologic features similar to those of benign perineurioma of soft tissue along with hypercellularity, nuclear atypia, hyperchromasia, and a high mitotic rate. [from NCI]

MedGen UID:
220432
Concept ID:
C1266188
Neoplastic Process
7.

Peripheral

On or near an edge or constituting an outer boundary; the outer area. [from NCI]

MedGen UID:
59959
Concept ID:
C0205100
Spatial Concept
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