Hyalinosis cutis et mucosae in siblings

Area of Science:

• Dermatology
• Genetics
• Otolaryngology

Background:

• Hyalinosis cutis et mucosae is a rare autosomal recessive disorder.
• The exact etiology remains unknown.
• Characterized by hoarseness and distinctive skin/mucous membrane lesions.

Observation:

• Clinical presentation includes hoarseness from infancy.
• Yellowish papules and plaques manifest on skin and mucous membranes.
• Microscopy reveals PAS-positive material accumulation around dermal blood vessels.

Findings:

• The deposited material likely originates from basement membrane glycoproteins.
• Carbon dioxide laser surgery demonstrated efficacy in treating vocal cord thickening.
• This intervention improved hoarseness associated with the condition.

Implications:

• Suggests a potential therapeutic target for managing vocal cord symptoms.
• Highlights the role of basement membrane components in the disorder's pathology.
• Further research into the etiology could reveal novel treatment strategies.