Sialoblastoma: A rare salivary gland neoplasm

Sialoblastoma in chin and management of treatment

OBJECTIVE

Sialoblastoma is a rare salivary gland tumor mainly located in parotid. In this article, we aimed to review the clinical manifestations and treatments of sialoblastoma, especially to provide effective chemotherapy regimens to instruct internal medicine therapy for unresectable or recurrent tumors.

METHOD

We reported a 1-year old girl who presented a left-sided firm facial mass and subsequently diagnosed as sialoblastoma. Afterwards, we reviewed and analyzed relevant literatures.

RESULTS

Sixty-four cases of pediatric sialoblastoma were reviewed. Of them, surgical excision was the basic treatment, 17 cases received chemotherapy, and 15 cases got good response. Lung metastasis was reported in six patients, all of whom had good response to chemotherapy.

CONCLUSION

Chemotherapy may play an important role in residual, extensive, metastatic and relapsed cases. In addition, lung metastasis was unlikely to exert a significant effect on prognosis.

Pediatric sialoblastoma: Evaluation and management

OBJECTIVES

Sialoblastoma is a rare congenital salivary gland tumor of epithelial origin. The objectives of this study are to review the literature regarding clinical presentation of sialoblastoma, evaluate the effectiveness of various treatment methods, and present guidelines for evaluation and management in the pediatric population.

DATA SOURCES

Case presentation and literature review.

REVIEW METHODS

A comprehensive search was conducted to identify cases of pediatric sialoblastoma in the English-language literature. The presentation, evaluation, and management of reported cases were analyzed. We also report an invasive and recurrent case in a pediatric patient to highlight the aggressive nature of these lesions.

RESULTS

Sixty-two cases of pediatric sialoblastoma were reviewed. The age at initial presentation ranged from before birth to 15 years. The parotid gland was the most common location (n = 47). Surgical excision was the primary treatment in all patients. Nine patients developed metastatic disease of the lung, lymph nodes, or bone. Almost a third of patients had recurrence and over two thirds of patients were tumor-free for at least 1 year following their last treatment intervention.

CONCLUSION

Prompt and complete surgical excision should be recommended to prevent local and systemic recurrence of pediatric sialoblastoma. Chemotherapy has also shown promise in several cases, and clinical genomics may shed light on more therapy options. Patients should be closely followed for at least 12 months following diagnosis, or longer depending on the histopathological staging of the tumor.

Sialoblastoma: A literature review from 1966-2011

Sialoblastoma is a rare congenital tumour of the salivary glands arising mainly from the parotid gland. It is usually diagnosed at birth or shortly thereafter with a significant variability in histological appearance and clinical course. In extensive search of PubMed indexed journals, we got 46 cases of "sialobalstoma/embryoma/congenital basal adenoma", with one case was of German literature and three additional cases of adult sialobalstoma. This article has extensively reviewed the clinical, histopathological and immunohistochemical features, Magnetic resonance imaging (MRI) and Computerized Tomography (CT) findings, treatment and prognosis.

Surgical excision of sialoblastoma in the parotid gland in newborn

OBJECTIVES

To evaluate outcome of surgical excision of sialoblastoma in the parotid gland in newborn.

PATIENTS AND METHODS

This was a retrospective review of 3 pediatric patients with sialoblastoma in the parotid gland that underwent surgical resections. All patients are newborn boys. The lesions ranged from 5 cm × 5 cm to 8 cm × 5 cm in size. The tumor was resected en bloc, and the facial nerve was preserved.

RESULTS

None surgical complications occurred. The mean follow-up was 34 months; none patients had recurrent lesions.

CONCLUSION

Surgical dissection of sialoblastoma in the parotid gland in the newborn is most efficient and safe.