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1. 後天性色素性母斑（ほくろ） acquired melanocytic nevi moles
2. 色素細胞性母斑（ほくろ）以外の良性色素性皮膚病変 benign pigmented skin lesions other than melanocytic nevi moles
3. 非定型母斑（異形成母斑） atypical dysplastic nevi
4. 表皮母斑および表皮母斑症候群 epidermal nevus and epidermal nevus syndrome
5. 脂腺母斑および脂腺母斑症候群 nevus sebaceous and nevus sebaceous syndrome

Clear-cell melanocytic lesions with balloon-cell and sebocyte-like melanocytes: a unifying concept.

Kazlouskaya V1, Guo Y, Maia-Cohen S, Mones J.
The American Journal of dermatopathology.Am J Dermatopathol.2014 May;36(5):380-6. doi: 10.1097/DAD.0b013e31829fdcd7.
Melanocytes may assume unique shapes and sizes but rarely have clear cytoplasm. We studied 28 melanocytic lesions that contained clear-cell melanocytes of the balloon-cell and sebocyte-like types. Clear-cell melanocytes were found more commonly in females (64%) than in males (36%), with predominance
PMID 24394297

Vaira F1, Nazzaro G1, Veraldi S1.
JAMA dermatology.JAMA Dermatol.2014 Feb;150(2):176. doi: 10.1001/jamadermatol.2013.9197.
PMID 24553840

A hypothesis on the morphologic differences between Unna and Miescher nevi on the head and neck, based on embryologic bases.

Fernandez-Flores A1, Sanchez-Velicia L, Manjon JA, Alija A, Soto F.
The American Journal of dermatopathology.Am J Dermatopathol.2012 Aug;34(6):602-6. doi: 10.1097/DAD.0b013e31823d8b80.
Unna and Miescher nevi show very different morphologic features. The main difference is that melanocytes involve mainly the papillary dermis in Unna nevi, whereas they widely penetrate the reticular dermis in Miescher nevi. The reason for this behavior is not totally understood, but anatomical locat
PMID 22356920

Histopathological and Immunohistochemical Studies of Intramucosal Nevus in the Oral Mucosa: With Special Reference to "Maturation" and "Origin" of the Nevus Cells