Combined nevus D22.L
Synonym(s)
Combination nevus
Definition
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Combination of a melanocytic nevus with a blue nevus.
Clinic
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Characteristics of the blue nevus. Frequently a brown, dermal melanocytic nevus contains circumscribed blue-black parts of varying size, which clinically give rise to suspicion of malignancy.
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Histology
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Combination of a compound or dermal type melanocytic nevus with a blue nevus. This is characterized by a focal proliferation of dendritic or spindle, pigment-rich melanocytes, some of which are located in individual formations, some of which are irregularly grouped in a fibrosed area in the dermis. Mostly also numerous melanophages in this area.
Differential diagnosis
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Therapy
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Usually excision and histological control, as clinically often difficulties to distinguish from malignant melanoma.
Literature
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- Gerger A et al (2003) Diagnostic imaging of melanocytic skin tumors. J Cutan Pathol 30: 247-252
- Hofmann U et al (1992) Grouped and combined blue nevi. dermatologist 43: 517-519
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