In December 2008, a 5-month-old boy presented with a 1-month history of left nasal obstruction associated with purulent rhinorrhea. His delivery had been uneventful, and his nasal breathing was normal at birth. Rhinoscopy with a flexible endoscope showed a large, reddish, left-sided nasal mass completely occupying the nasal fossa. It bled easily, and its origin was not evident.
Magnetic resonance imaging (MRI) demonstrated an oval mass, measuring 14 × 19 × 17 mm, filling the left nasal cavity with heterogeneously hyperintense signal on T2-weighted images (Figure 1) and hypointense signal on T1-weighted images (Figure 2). After contrast administration, a marked, though incomplete, enhancement was evident on T1-weighted images (Figure 3) and gradient-echo T1-weighted images (Figure 4) and was associated with hypoenhancing areas within the lesion. The mass showed well-defined margins, and the nasal septum and medial maxillary sinus wall were deformed but not infiltrated.
Berlucchi M, Pedruzzi B, Farina D. Radiology Quiz Case 2. Arch Otolaryngol Head Neck Surg. 2010;136(11):1141. doi:10.1001/archoto.2010.190-a