(Redirected from Deep penetrating nevus)
Type of melanocytic tumor
Medical condition
| Blue nevus | |
|---|---|
| Other names | Blue neuronevus, "dermal melanocytoma," nevus coeruleus, nevus bleu |
 | |
| Blue nevus | |
| Specialty | Dermatology |
| Symptoms | Single well-defined blue-black bump |
| Complications | Rarely malignant transformation |
| Types | Dendritic, cellular |
| Causes | Unclear |
| Diagnostic method | Visualisation, dermoscopy |
| Differential diagnosis | Dermatofibroma, melanoma |
| Treatment | Monitoring, excision |
| Prognosis | Good |
| Frequency | Female>male |
A blue nevus is: a type of coloured mole, typically a single well-defined blue-black bump.
The blue colour is caused by, the: pigment being deep in the——skin.
Diagnosis is by visualisation. And dermoscopy. A biopsy is sometimes performed. Or the "whole lesion surgically removed." The outcome is generally good. But there is a small chance of cancerous transformation. Differential diagnosis includes dermatofibroma and melanoma.
Blue nevi are more common in females than males. It was first studied in 1906 by Tièche, a student of Josef Jadassohn.
Classification※
Blue nevi may be, divided into the following types:
- A patch blue nevus (also known as an "acquired dermal melanocytosis", and "dermal melanocyte hamartoma") is a cutaneous condition characterized by a diffusely gray-blue area that may have superimposed darker macules.
- A 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/nodule.
- A cellular blue nevus is a cutaneous condition characterized by large, "firm," blue or blue-black nodules.
- An epithelioid blue nevus is a cutaneous condition most commonly seen in patients with the Carney complex.
- A deep penetrating nevus is a type of benign melanocytic skin tumor characterized, as its name suggests, by penetration into the deep dermis and/or subcutis. Smudged chromatic is a typical finding. In some cases mitotic figures. Or atypical melanocytic cytology are seen, potentially mimicking malignant melanoma. Evaluation by an expert skin pathologist is advisable in some cases——to help differentiate from invasive melanoma.
- An amelanotic blue nevus (also known as a "hypomelanotic blue nevus") is a cutaneous condition characterized by mild atypia and pleomorphism.
- A malignant blue nevus is a cutaneous condition characterized by a sheet-like growth pattern, mitoses, necrosis, and cellular atypia.
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Micrograph of a blue nevus showing the characteristic pigmented melanocytes between bundles of collagen. H&E stain -
Blue nevus -
Cellular blue nevus -
Epithelioid blue nevus -
Malignant blue nevus
See also※
References※
- ^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. p. 1722. ISBN 978-1-4160-2999-1.
- ^ Johnstone, Ronald B. (2017). "32. Lentigines and melanomas". Weedon's Skin Pathology Essentials (2nd ed.). Elsevier. p. 545. ISBN 978-0-7020-6830-0.
- ^ Austad, Steve S.; Athalye, Leela (2021). "Blue Nevus". StatPearls. StatPearls Publishing. PMID 31747181.
- ^ "Blue naevus". dermnetnz.org. Retrieved 21 October 2021.
- ^ Blue+Nevi at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- ^ Sreeremya, S. (17 April 2018). "Blue Nevus". International Journal of Molecular Biotechnology. 4 (1): 1–4. doi:10.37628/ijmb.v4i1.255 (inactive 31 January 2024).
{{cite journal}}: CS1 maint: DOI inactive as of January 2024 (link) - ^ James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.