Benign cephalic histiocytosis.

Area of Science:

• Dermatology
• Pediatric Dermatology
• Histopathology

Background:

• Benign cephalic histiocytosis (BCH) is a rare, self-limiting cutaneous disorder primarily affecting infants and young children.
• It is characterized by the idiopathic proliferation of histiocytes in the dermis, typically presenting on the face.

Observation:

• A one-and-a-half-year-old girl presented with a year-long history of gradually increasing, asymptomatic papules on both cheeks.
• The lesions varied in color from erythematous to hyperpigmented and skin-colored.

Findings:

• Clinical examination revealed multiple facial papules consistent with a histiocytic proliferation.
• Histopathological examination and immunohistochemistry confirmed the diagnosis of benign cephalic histiocytosis.

Implications:

• This case highlights the importance of considering benign cephalic histiocytosis in the differential diagnosis of pediatric facial papules.
• Accurate diagnosis through multimodal assessment (clinical, histopathological, immunohistochemical) is crucial for appropriate management and reassurance.
• Understanding the benign and self-limiting nature of BCH is important for avoiding unnecessary treatments.