Case for diagnosis. Lichen myxedematosus

Area of Science:

• Dermatology
• Internal Medicine
• Pathology

Background:

• Scleromyxedema (lichen myxedematosus) is a rare, progressive papular mucinosis of unknown cause.
• It frequently co-occurs with monoclonal gammopathy and can involve systemic organs like the heart, lungs, kidneys, and nerves.
• Diagnosis relies on clinical presentation, histopathology, monoclonal gammopathy, and exclusion of thyroid disease.

Observation:

• This report details a patient diagnosed with scleromyxedema.
• The patient presented with a recent history of acute myocardial infarction.
• Monoclonal gammopathy was also identified in this patient.

Findings:

• The case illustrates the association between scleromyxedema, monoclonal gammopathy, and cardiovascular events.
• Histopathological findings consistent with scleromyxedema (mucin deposition, fibroblast proliferation, fibrosis) are presumed.
• The presence of generalized papular and sclerodermoid lesions is a key diagnostic feature.

Implications:

• This case underscores the importance of considering systemic involvement in scleromyxedema, particularly cardiovascular complications.
• Early recognition and management of monoclonal gammopathy may be crucial in patients with scleromyxedema.
• Further research into the etiology and systemic manifestations of scleromyxedema is warranted.