Necrotizing sialometaplasia of the parotid gland associated with facial nerve paralysis

Bilateral Asynchronous Necrotizing Sialometaplasia of the Buccal Mucosa: A Case Report and Literature Review

Necrotizing sialometaplasia is a rare, benign disease that affects any area containing minor salivary glands. This entity presents a diagnostic difficulty due to its resemblance to malignancy. A unique case of bilateral asynchronous necrotizing sialometaplasia with superinfection secondary to trauma is described in this study. A 19-year-old female presented with bilateral ulcerative lesions in her buccal mucosa and facial swelling. The two lesions appeared several weeks apart. The diagnostic workup excluded rheumatologic, malignant, and infectious etiologies. The patient was treated with antibiotics and steroids with subsequent resolution of symptoms. Given the exclusion of other etiologies, the patient was diagnosed with bilateral asynchronous necrotizing sialometaplasia with superinfection. This case demonstrates the importance of considering necrotizing sialometaplasia as a diagnosis in all patients with oral ulcerative lesions.

Necrotizing sialometaplasia of the tonsillar pillar. An unusual case

Necrotizing Sialometaplasia (NS) is a rare, benign, self-limited, inflammatory and necrotizing reaction of the salivary glandular tissue. Due to the clinical picture (a painful ulcer with well-defined edges), and histopathological characteristics (nuclear and cellular pleomorphism of ductal cells) NS can mimic a malignant lesion. The correct diagnosis is important because NS shows a spontaneous resolution and therefore no further treatment is needed. We report a very unusual case of spontaneous and recurrent NS located on the anterior tonsillar pillar in a 43-year old man, which clinically mimics a malignant lesion. The clinician should be aware to include NS in the differential diagnosis of ulcers in soft palate and tonsillar pillars. Key words:Minor salivary gland, necrotizing sialometaplasia, oral ulcer, squamous cell carcinoma, tonsillar pillar.