[Infantile hemangiopericytoma of the nasal cavity]

Area of Science:

• Pediatric Oncology
• Pathology
• Genetics

Background:

• Infantile sinunasal hemangiopericytoma is a rare tumor, often considered a variant of infantile myofibroma.
• This condition typically affects infants and can involve the sinonasal region and anterior skull base.

Observation:

• A case of sinonasal, infantile hemangiopericytoma in a female infant is presented.
• The tumor affected the anterior skull base and ethmoid bone.

Findings:

• The tumor exhibited specific chromosomal gains (6q14q16.2 and 18q22qter).
• Chromosomal losses were also identified, including 5q33.3q35.2, 10p11.2p12.2, 10q24.3q26.1, 15q23q25, 17p12pter, and 22q11.2q13.2.
• These genetic alterations provide insights into the tumor's pathogenesis.

Implications:

• Understanding the genetic profile of infantile sinunasal hemangiopericytoma is crucial for diagnosis and management.
• Successful endonasal tumor resection demonstrates a viable surgical approach for this rare condition.
• Further research into infantile myofibroma variants and their genetic underpinnings is warranted.