Non-ulcerated necrotizing sialometaplasia may mimic a salivary gland tumor

Necrotizing sialometaplasia (NS) is a benign, self-limiting inflammatory entity that mainly affects the minor salivary glands located in the hard palate. Classically, NS is characterized as a nodule that evolves to a central ulcer. The most widely recognized triggering factor is an ischemic event. The diagnosis becomes a challenge in non-ulcerated NS cases which is essential to rule out the possibility of salivary gland tumors, especially the malignant ones. Here, we presented a case of a 32-year-old male patient with a 1-month complaint of a painful, slightly elevated erythematous area on the hard palate. Incisional biopsy was performed, and NS was diagnosed based on histopathological and immunohistochemical analyses. Clinicians should be aware of and consider NS as a differential diagnosis of minor salivary gland tumors, particularly when it presents as a non-ulcerated clinical aspect.

Análise morfológica microscópica de Mucoceles na mucosa bucal e inter-relação com sua etiopatogenia / Microscopic morphological analysis of Mucoceles in the oral mucosa and its interrelationship with etiopathogenesis

Avaliamos o perfil dos portadores de Mucoceles bucais e estudamos microscopicamente suas características para correlacioná-las com as possíveis etiopatogenias, especialmente as obstruções ductais promovidas por proliferações epiteliais hiperplásicas e neoplásicas como o papiloma intraductal, Papiloma Ductal Invertido e Sialadenoma Papilífero. Realizamos o levantamento das informações registradas de 987 casos clínicos e suas respectivas peças cirúrgicas foram re-analisadas microscopicamente em cortes teciduais corados em HE. Os dados foram registrados e tabulados para comparações e correlações. A faixa etária mais comprometida foi a segunda e terceira décadas (399 e 345 casos) e o local mais afetado foi o lábio inferior (707 casos). A distribuição entre os gêneros foi praticamente igual. Em 262 casos os pacientes relacionaram a lesão com o traumatismo prévio. Dos 987 casos, 77 (7,8%) foram diagnosticados como Cisto de Retenção Mucosa e (910) como cisto por extrasamento mucoso. Os Cistos de Retenção Mucosa aconteceram predominantemente pacientes acima da quinta década de vida. Algumas situações simultâneas foram identificadas com frequência nas glândulas salivares associadas às Mucoceles, como a Sialadenite Crônica Inespecífica, Sialadenite Crônica Esclerosente ou Tumor de Kuttner, Oncocitose e Sialolitíase. Foram diagnosticados ainda, 21 Papilomas Intraductais, 6 Papilomas Ductais Invertidos e 3 Sialadenomas Papilíferos, além de 27 Proliferações Epiteliais Intraductais de diagnóstico não determinado. Concluímos que: a) além dos traumatismos, na etiopatogenia das Mucoceles bucais deve-se considerar a presença dos Papilomas Ductais como uma importante possibilidade a ser analisada especificamente nas observações microscópicas das peças cirúrgicas enviadas para análise histopatológica, considerando-se a sua natureza neoplásica. b) a Sialolitíase e a Oncocitose devem ser consideradas como causas obstrutivas ductais de Mucoceles bucais em suas análises...

This study evaluated the profile of individuals with oral Mucoceles and investigated their microscopic characteristics with a view to correlate them to the possible etiopathogenesis, especially ductal obstructions caused by hyperplastic and neoplastic epithelial proliferations such as Intraductal Papilloma, Inverted Ductal Papilloma and Sialoadenoma Papilliferum. The study surveyed the records of 987 clinical cases and respective specimens, which were microscopically reanalyzed on tissue sections stained with hematoxylin and eosin. Data were recorded and tabulated for comparisons and correlations. The most affected age range was the second and third decades of life (399 and 345 cases), and the lower lip was the most affected site (707 cases). The distribution between genders was nearly equal. In 262 cases the patients related the lesion to a previous trauma. Among the 987 cases, 77 (7.8%) were diagnosed as mucus retention cyst and (910) as mucus extravasation cyst. The Mucus Retention Cysts affected mainly patients above the fifth decade of life. Simultaneous disorders were often identified in salivary glands associated to the Mucoceles, such as Nonspecific Chronic Sialadenitis, Chronic Sclerosing Sialadenitis or Kuttner Tumor, Oncocytosis and Sialolithiasis. There were also diagnoses of 21 Intraductal Papillomas, 6 Inverted Ductal Papillomas and 3 cases of Sialoadenoma papilliferum, besides 27 Intraductal Epithelial Proliferations of undetermined diagnosis. It was concluded that: a) in addition to trauma, the etiopathogenesis of oral Mucoceles should consider the presence of Ductal Papillomas as an important possibility to be specifically analyzed on the microscopic analysis of specimens submitted to histopathological analysis, considering its neoplastic nature. b) Sialolithiasis and Oncocytosis should be considered as causes of ductal obstruction of oral Mucoceles in the clinical and microscopic analyses. c) the partial and total causes...

Análise morfológica microscópica de Mucoceles na mucosa bucal e inter-relação com sua etiopatogenia / Microscopic morphological analysis of Mucoceles in the oral mucosa and its interrelationship with etiopathogenesis

Avaliamos o perfil dos portadores de Mucoceles bucais e estudamos microscopicamente suas características para correlacioná-las com as possíveis etiopatogenias, especialmente as obstruções ductais promovidas por proliferações epiteliais hiperplásicas e neoplásicas como o papiloma intraductal, Papiloma Ductal Invertido e Sialadenoma Papilífero. Realizamos o levantamento das informações registradas de 987 casos clínicos e suas respectivas peças cirúrgicas foram re-analisadas microscopicamente em cortes teciduais corados em HE. Os dados foram registrados e tabulados para comparações e correlações. A faixa etária mais comprometida foi a segunda e terceira décadas (399 e 345 casos) e o local mais afetado foi o lábio inferior (707 casos). A distribuição entre os gêneros foi praticamente igual. Em 262 casos os pacientes relacionaram a lesão com o traumatismo prévio. Dos 987 casos, 77 (7,8%) foram diagnosticados como Cisto de Retenção Mucosa e (910) como cisto por extrasamento mucoso. Os Cistos de Retenção Mucosa aconteceram predominantemente pacientes acima da quinta década de vida. Algumas situações simultâneas foram identificadas com frequência nas glândulas salivares associadas às Mucoceles, como a Sialadenite Crônica Inespecífica, Sialadenite Crônica Esclerosente ou Tumor de Kuttner, Oncocitose e Sialolitíase. Foram diagnosticados ainda, 21 Papilomas Intraductais, 6 Papilomas Ductais Invertidos e 3 Sialadenomas Papilíferos, além de 27 Proliferações Epiteliais Intraductais de diagnóstico não determinado. Concluímos que: a) além dos traumatismos, na etiopatogenia das Mucoceles bucais deve-se considerar a presença dos Papilomas Ductais como uma importante possibilidade a ser analisada especificamente nas observações microscópicas das peças cirúrgicas enviadas para análise histopatológica, considerando-se a sua natureza neoplásica. b) a Sialolitíase e a Oncocitose devem ser consideradas como causas obstrutivas ductais de Mucoceles bucais em suas análises...

This study evaluated the profile of individuals with oral Mucoceles and investigated their microscopic characteristics with a view to correlate them to the possible etiopathogenesis, especially ductal obstructions caused by hyperplastic and neoplastic epithelial proliferations such as Intraductal Papilloma, Inverted Ductal Papilloma and Sialoadenoma Papilliferum. The study surveyed the records of 987 clinical cases and respective specimens, which were microscopically reanalyzed on tissue sections stained with hematoxylin and eosin. Data were recorded and tabulated for comparisons and correlations. The most affected age range was the second and third decades of life (399 and 345 cases), and the lower lip was the most affected site (707 cases). The distribution between genders was nearly equal. In 262 cases the patients related the lesion to a previous trauma. Among the 987 cases, 77 (7.8%) were diagnosed as mucus retention cyst and (910) as mucus extravasation cyst. The Mucus Retention Cysts affected mainly patients above the fifth decade of life. Simultaneous disorders were often identified in salivary glands associated to the Mucoceles, such as Nonspecific Chronic Sialadenitis, Chronic Sclerosing Sialadenitis or Kuttner Tumor, Oncocytosis and Sialolithiasis. There were also diagnoses of 21 Intraductal Papillomas, 6 Inverted Ductal Papillomas and 3 cases of Sialoadenoma papilliferum, besides 27 Intraductal Epithelial Proliferations of undetermined diagnosis. It was concluded that: a) in addition to trauma, the etiopathogenesis of oral Mucoceles should consider the presence of Ductal Papillomas as an important possibility to be specifically analyzed on the microscopic analysis of specimens submitted to histopathological analysis, considering its neoplastic nature. b) Sialolithiasis and Oncocytosis should be considered as causes of ductal obstruction of oral Mucoceles in the clinical and microscopic analyses. c) the partial and total causes...

A case report of the salivary duct cyst and review of literatures

The salivary duct cyst is a rare disease and usually found in the parotid gland. A 55-years-old man presented swelling in the left buccal area and pathological diagnosis was a salivary duct cyst. Though its recurrence has been reported rare, the presented case showed recurrent swelling after enucleation. The recurrent lesion was successfully treated by incision and drain insertion.

Necrotizing sialometaplasia: Report of 2 cases / 대한구강악안면방사선학회지

Necrotizing sialometaplasia (NS) was defined by Abrams et al. in 1973 as a reactive necrotizing inflammatory process involving minor salivary glands of the hard palate. Before that recognition, many patients with this condition had been improperly treated because of its clinical and histologic resemblance to malignancy such as mucoepidermoid carcinoma and squamous cell carcinoma. We report two cases of necrotizing sialometaplasia. One case involved a 58-year-old male who had an ulcerative palatal lesion exposing underlying bone which has the typical features of the above mentioned condition. Another case involved a 59-year-old male who developed a necrotizing sialometaplasia in association with a dome-shaped palatal swelling which was proved as an adenoid cystic carcinoma after operation biopsy.