Acral syringomas presenting as a photosensitive papular eruption

Area of Science:

• Dermatology and Cutaneous Oncology
• Histopathology and Diagnostic Pathology

Background:

• Syringomas are benign adnexal neoplasms originating from the sweat ducts.
• Typically, they present as small, flesh-colored to yellowish papules, often on the eyelids or face.
• Acral syringomas, those on the extremities, are less common and present unique clinical challenges.

Observation:

• A 43-year-old woman developed recurrent, remitting reddish-brown papules on sun-exposed arms and forearms over two years.
• Histopathologic examination confirmed the diagnosis of syringoma.
• This presentation is unusual due to its location and fluctuating course.

Findings:

• This is the first reported case of syringomas exclusively affecting sun-exposed areas.
• The recurrent and remitting nature of the eruption in this patient is a distinctive feature.
• Literature review on acral syringomas highlights their rarity and varied clinical presentations.

Implications:

• This case expands the known clinical spectrum of syringoma.
• Understanding the role of sun exposure in syringoma development may inform future research.
• Further investigation into the pathogenesis of acral and sun-induced syringomas is warranted.