Imaging findings of necrotizing sialometaplasia of the parotid gland: case report and literature review.

Although necrotizing sialometaplasia (NS) of the parotid gland is rare and occasionally presents as a lesion that mimics a malignant tumour, imaging findings in cases of NS have been rarely reported. We describe here a case of NS in which there was an increasing lesion manifesting overnight on the parotid gland in an 83-year-old male. We also investigated the use of pre-operative imaging based on previous reports and discuss the importance of these images in helping to guard against overzealous treatment. It is critically important to closely examine whether there are aspects of NS, such as the present case, in pre-operative MRI findings that can be useful in proper diagnosis and treatment.

A case of necrotizing sialometaplasia involving bilateral parotid glands.

Necrotizing sialometaplasia of the parotid gland is infrequent and can be mistaken as a malignant disease. Its etiology is thought to be an insufficient blood supply. Bilateral involvement of this disease in parotid glands has been rarely reported in the English literature. We report a case of necrotizing sialometaplasia diagnosed after superficial parotidectomy due to bilateral parotid masses in a 69-year old heavy smoking female.

CT findings of necrotizing sialometaplasia.

An otherwise healthy 56-year-old Caucasian female was referred to the radiology department because of an ulceration of her palatal mucosa. Clinically the lesion was suspected to be malignant and a multislice CT examination of the head and neck region was performed. This revealed an ulcer-like cavity with no tumour-like contrast enhancement. No relevant bone changes or suspicious lymph nodes of the neck were detected. Based on the multislice CT findings, necrotizing sialometaplasia was suspected and the diagnosis was verified histopathologically. This report describes the CT findings of necrotizing sialometaplasia at the ulceration stage.

[Necrotizing sialometaplasia of the submandibular gland. Report of a case]. / Scialometaplasia necrotizzante della ghiandola sottomandibolare. Descrizione di un caso.

A case report of swelling of the right submandibular gland, with spontaneous remission, is described. Clinical, ultrasonographical and cytological features suggest that the swelling could be ascribed to a necrotizing sialometaplasia. The etiopathological hypothesis and pathology of the lesion are presented, and the differential diagnosis with other spreading lesions of the submandibular gland is discussed.

[Necrotizing sialometaplasia: an ignored disease]. / La sialométaplasie nécrosante: trop méconnue.

Necrotizing sialometaplasia is an ignored pathology. Differential diagnosis has to be made with a neoplasm. The presented case is characterized by an important bone defect, which, to our knowledge, has never been reported.