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[Angiolymphoid hyperplasia with eosinophilia or Kimura disease?]
1Ocní klinika 3. lékarské fakulty Univerzity Karlovy a Fakultní nemocnice Královské Vinohrady.
Summary
Angiolymphoid hyperplasia with eosinophilia (ALHE) and Kimura's disease are rare, similar conditions. This case highlights diagnostic challenges, suggesting potential overlap despite distinct features.
Area of Science:
- Dermatology
- Pathology
- Ophthalmology
Background:
- Angiolymphoid hyperplasia with eosinophilia (ALHE) and Kimura's disease are distinct but similar rare conditions.
- Historically, they were considered variants of a single disease due to overlapping features.
- Recent understanding emphasizes their independent nature with specific clinical and morphological characteristics.
Observation:
- A 76-year-old Caucasian male presented with a six-year history of subcutaneous tumors.
- Orbital tumors developed, initially involving the lacrimal gland structures.
- Recurrence occurred after surgical excision, necessitating further histological examination.
Findings:
- Histological examination of orbital tumors confirmed Angiolymphoid hyperplasia with eosinophilia (ALHE).
- Key diagnostic features included absence of lymphatic follicles and fibrotization, and epithelioid/histiocyte-like endothelial cells forming vascular lumina.
- The rarity of Kimura's disease in Caucasian populations supported the ALHE diagnosis.
Implications:
- This case underscores the diagnostic difficulties in differentiating ALHE and Kimura's disease.
- The findings suggest potential overlap in features previously considered distinct.
- The study questions the unequivocal certainty of strictly separating these two nosological entities in clinical practice.