blue nevus

blue nevus
blue nevus n a small blue or bluish black spot on the skin that is sharply circumscribed, rounded, and flat or slightly raised and is usu. benign but often mistaken for a melanoma

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a benign, usually solitary type of melanocytic nevus, representing a localized proliferation of melanocytes in the dermis. It is a dark blue to black, moderately firm, rounded, sharply defined nodule containing spindle-shaped melanocytes with slender cytoplasmic processes, and is generally seen in association with melanin-laden macrophages in a sclerotic dermis. Called also dermal melanocytoma and Jadassohn-Tiиche n.

Medical dictionary. 2011.

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  • Blue nevus — Classification and external resources Micrograph of a blue nevus showing the characteristic pigmented melanocytes between bundles of collagen. H E stain …   Wikipedia

  • Blue nevus of Jadassohn–Tièche — (also known as a Common blue nevus, and Nevus ceruleus ) is a cutaneous condition characterized by a steel blue papule or nodule.[1]:701 See also Blue nevus Skin lesion List of cutaneous conditions References ^ …   Wikipedia

  • blue nevus — noun also blue naevus : a small blue or bluish black spot on the skin, sharply circumscribed, rounded, and flat or slightly raised that is usually benign but often mistaken for a melanoma …   Useful english dictionary

  • Malignant blue nevus — A malignant blue nevus is a cutaneous condition characterized by a sheet like growth pattern, mitoses, necrosis, and cellular atypia.[1]:701[2] See also Blue nevus List of cutaneous conditions References …   Wikipedia

  • cellular blue nevus — a usually congenital type of large blue nevus found in the dermis or subcutaneous tissue around the buttocks or sacrococcygeal region. It consists of deeply pigmented, dendritic, spindle shaped melanocytes alternating with cellular islands of… …   Medical dictionary

  • Patch blue nevus — A Patch blue nevus (also known as an Acquired dermal melanocytosis, [1] and Dermal melanocyte hamartoma [1]) is a cutaneous condition characterized by a diffusely gray blue area that may have superimposed darker macules.[1] See also Cutaneous… …   Wikipedia

  • Nevus of Ota — Classification and external resources ICD 10 D22.3 (ILDS D22.301) DiseasesDB …   Wikipedia

  • Nevus — Not to be confused with Naevius, Nevis, or Nevius. Naevus and Nevi redirect here. For the British experimental rock group, see Naevus (band). For the Eritrean footballer, see Nevi Ghebremeskez. For the Norwegian bank, see Nevi (company). Nevus… …   Wikipedia

  • Nevus — A pigmented spot on the skin, such as a mole. The plural of nevus is nevi. * * * 1. A circumscribed malformation of the skin, especially if colored by hyperpigmentation or increased vascularity; a n. may be predominantly epidermal, adnexal,… …   Medical dictionary

  • nevus — nevoid /nee voyd/, adj. /nee veuhs/, n., pl. nevi / vuy/. any congenital anomaly of the skin, including moles and various types of birthmarks. [1685 95; sp. var. of L naevus mole] * * * ▪ anatomy plural  Nevi,         congenital skin lesion, or… …   Universalium

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