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[Acral papular lichen myxedematosus]
S Gartner1, H P Schoppelrey, M Agathos
1Abteilung für Dermatologie und Allergologie, Städtisches Krankenhaus München-Schwabing, Akademisches Lehrkrankenhaus der Ludwig-Maximilians-Universität.
Summary
Acral persistent papular mucinosis presents as papules on the hands and forearms. This condition is identified as an acral papular subtype of lichen myxedematosus (LM), suggesting a reclassification.
Area of Science:
- Dermatology
- Pathology
Background:
- Acral persistent papular mucinosis (APPM) was described by Rongioletti in 1986.
- APPM is characterized by persistent papules on the dorsal hands and distal forearms.
- Skin biopsies show mucin deposits similar to those found in lichen myxedematosus (LM).
Observation:
- A 54-year-old female patient presented with a 2.5-year history of skin lesions.
- The lesions followed a typical acral distribution pattern.
- Routine laboratory results were unremarkable.
Findings:
- The patient's presentation suggests APPM is an acral papular subtype of LM.
- Histopathological examination revealed characteristic mucin deposits.
Implications:
- This entity should be recognized as acral papular lichen myxedematosus.
- This classification may replace the less defined discrete papular form of LM.
- Refined classification aids in clinical diagnosis and management of LM subtypes.