Epithelioid Fibrous Histiocytoma with LRRFIP1::ALK Fusion and Smooth Muscle Hyperplasia

Key Points

• The aim is to explore the impact of LRRFIP1::ALK fusion on the histological characteristics of epithelioid fibrous histiocytoma.
• Descriptive analysis of histological features associated with LRRFIP1::ALK fusion.
• Assessment of smooth muscle hyperplasia in the context of the fusion.
• Details of the fusion's influence on histological features remain undetermined.