A 43-year-old woman with a long history of chronic allergies visits her primary care physician with a 2-week history of progressive left perinasal pain and nasal pressure, increasing episodes of yellowish-green nasal discharge, and a fever 1 day prior of 100.8. Sign ificant findings on physical examination include a temperature of 101.0, tenderness to palpation ove r the left maxillary sinus, and nasal speculum observation of obstruction of the left middle meatus by a large, pale, polypoid mass with a small focus of ulceration and a similar but smaller mass seen in the right middle meatus. A clinical diagnosis of left maxillary sinusitis is made and the patient is started on antibiotics. She is subsequently referred to an otolaryngologist who excises the bilateral masses to relieve the sinus obstruction.
Which of the following findings would you expect the pathologist to see on microscopic examination of these masses?