A 38-year-old man from Mumbai presents with a 3-year history of progressive nasal obstruction and recurrent sinusitis. On anterior rhinoscopy, multiple pale, smooth, glistening masses are seen bilaterally in the nasal cavity. CT paranasal sinuses shows opacification of the maxillary and ethmoid sinuses with polypoid masses. Serum IgE is markedly elevated at 2500 IU/mL. He reports a lifelong history of asthma and eczema. What is the most likely diagnosis?