An Autopsied Case of Erdheim-Chester Disease with Severe Cardiovascular Involvement

Area of Science:

• Pathology
• Genetics
• Rare Diseases

Background:

• Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis.
• Cardiovascular involvement is common in ECD but pathological features are rarely described.
• This case highlights potential causes of death in ECD patients.

Purpose of the Study:

• To describe the pathological findings in an autopsy of an ECD patient.
• To investigate the association between cardiovascular lesions and genetic mutations in ECD.

Main Methods:

• Autopsy examination of an ECD patient with multi-organ involvement.
• Histopathological analysis of affected tissues, including arteries.
• Genetic analysis for BRAF mutations.

Main Results:

• Autopsy revealed pulmonary, cardiovascular, and retroperitoneal involvement.
• Pathological findings included coronary and renal arterial stenosis.
• The BRAF^V600E gene mutation was identified in association with arterial lesions.

Conclusions:

• BRAF^V600E mutation is associated with arterial stenosis in ECD.
• Genetic testing for BRAF mutations should be considered in ECD patients with arterial disease.
• This finding may improve understanding and management of ECD complications.