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Segmental lentiginosis with "jentigo" histologic pattern.

L Marchesi¹, L Naldi, A Di Landro

¹Department of Dermatology, University of Milan, Italy.

The American Journal of Dermatopathology

|August 1, 1992

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This study describes a rare case of segmental lentiginosis, a unilateral skin condition with lentigines on one side of the body. Histology revealed a lentiginous pattern and jentigo pattern, clarifying diagnostic confusion with similar conditions.

Area of Science:

Dermatology
Medical Case Reports

Background:

Segmental lentiginosis, characterized by unilateral distribution of lentigines, is a rare dermatological condition.
Previous literature has used terms like 'zosteriform lentiginous nevus' which can cause diagnostic ambiguity.

Observation:

A case of segmental lentiginosis is presented in a 23-year-old woman.
The lesions were predominantly on the right side of the face and neck, largely within the trigeminal nerve distribution.
Histopathological examination showed a lentiginous pattern and melanocyte nests at the dermal-epidermal junction (jentigo pattern).

Findings:

The case exhibits features consistent with segmental lentiginosis.
Histology confirmed a lentiginous pattern and the 'jentigo pattern' of melanocyte distribution.

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The findings highlight potential diagnostic confusion with 'nevus spilus' (speckled lentiginous nevus).

Implications:

This case contributes to understanding the spectrum of lentiginous disorders.
Clarifying terminology is crucial for accurate diagnosis and management of these skin conditions.
Further research may elucidate the specific etiology and classification of segmental lentiginosis.