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Lymphoepithelioma-like carcinoma of salivary glands: treatment results and failure patterns

Departments of ¹ Radiation Oncology and ² Pathology, Chang Gung Memorial Hospital-Kaohsiung, Taiwan, R.O.C.

Correspondence: Hsuan-Ying Huang, Department of Pathology, Chang Gung Memorial Hospital-Kaohsiung, 123, Ta-Pei Road, Niao Sung Hsian, Kaohsiung Hsien, Taiwan, R.O.C

The purpose of this study was to evaluate the treatment results and failure patterns of lymphoepithelioma-like carcinoma (LELC) of salivary glands. From June 1987 to May 2001, nine patients with LELC of salivary glands were treated at our hospital. One patient was excluded due to the loss of clinical follow-up after surgery. For the remaining eight patients, the primary tumour sites were parotid glands (4 patients), submandibular glands (3), and the minor salivary glands in right cheek (1), respectively. Seven patients underwent surgical treatment and post-operative radiotherapy, while the other one patient was treated with surgery only. The total radiation dose to the salivary tumour bed ranged from 39.6 Gy to 67.6 Gy (mean dose: 58.3 Gy and median dose: 59 Gy). The treatment results and failure patterns were analysed. The survival time ranged from 21.4 months to 145.2 months (mean: 69.1 months, median: 54.5 months). At the end of follow-up, six patients were still alive and two died. One patient died of distant metastases 21.5 months after the surgical treatment of LELC. The other case died of intercurrent disease (pontine haemorrhage) 53 months after surgery. No patient had local or regional failure after the treatments. Distant failure was noted in two patients. The patients with LELC of salivary glands were shown to have favourable prognoses. No local or regional failure was noted. However, distant failure developed in two patients. The risk of distant metastasis should be carefully monitored, especially for those patients with more advanced neck node involvement.