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[Hereditary progressive mucinous histiocytosis].
N Antoni-Bach1, R Pfister, E Grosshans
1Service de Dermatologie, Hôpital Pasteur, 68024 Colmar Cedex, France.
Annales De Dermatologie Et De Venereologie
|June 14, 2000
Summary
Hereditary progressive mucinous histiocytosis, a rare skin condition, presents as papules and mucin deposits. Genetic analysis suggests a possible X-linked or autosomal dominant inheritance pattern, predominantly affecting females.
Area of Science:
- Dermatology
- Genetics
- Histopathology
Background:
- Hereditary progressive mucinous histiocytosis (HPMH) is a rare, non-Langerhans histiocytosis affecting only women, characterized by distinct skin lesions.
- Its clinical, histological, and genetic profiles differentiate it from other histiocytoses and overload disorders.
Observation:
- A 49-year-old woman presented with asymptomatic, progressively spreading papules on her hands since childhood.
- Family history revealed affected mother and sisters, but no male relatives, suggesting a hereditary component.
- Histological examination showed dermal infiltration, mucin overload, and characteristic histiocytes with specific cytoplasmic inclusions.
Findings:
- The case presented aligns with the diagnostic criteria for HPMH.
- Pedigree analysis supports a dominant hereditary transmission, with a notable absence of affected males.
- Electron microscopy revealed features suggestive of a phospholipid deposit disorder or primary macrophage proliferation.
Implications:
- This report details the first observed case of HPMH in France.
- The findings contribute to understanding the potential genetic transmission (X-linked or autosomal dominant) and pathogenesis of HPMH.
- Further research is needed to elucidate the exact inheritance pattern and underlying mechanisms, potentially involving mitochondrial or hormonal factors.