Final answer:
Juvenile angiofibroma typically presents with nasal obstruction, nasal bleeding, and potentially facial swelling or deformity in adolescent males.
Step-by-step explanation:
Juvenile angiofibroma (JNA) typically presents as a benign but locally aggressive vascular tumor that predominantly affects adolescent males. Patients with JNA usually experience symptoms such as nasal obstruction, nasal bleeding (epistaxis), and sometimes facial swelling or deformity. The tumor originates in the posterior part of the nasal cavity and may extend to involve adjacent structures. Diagnosis is typically based on clinical presentation and imaging studies, and biopsy is avoided due to the risk of significant bleeding.