IntroductionNasopharyngeal adenoid cystic carcinoma is a rare tumor. Compared with others nasopharyngeal tumors, it is characterised by slow evolution but it is locally aggressive and has a high tendency to recurrences. Due to the rarity of cases, no consensus exists about treatment approaches.Presentation of the caseWe report the case of a 55-year-old-woman, with a locally advanced adenoid cystic carcinoma. The patient was operated by endoscopic surgery, received radiation and had a good objective response. The follow-up showed no local recurrence after one year.ConclusionThe aim of this work is to review the literature concerning this rare malignancy, and discusses treatment approaches in initial situations and during recurrences.We supported the interest of the intraoperative neuronavigation system for surgical safety.

Introduction: Thyroid papillary microcarcinomas revealed by cystic cervical lymph node metastasis are exceptionally observed. Cervical cystic masses are most often associated with bronchial cleft cysts.Case Report: In this paper, we presented a 63 years old patient presenting an isolated lateral cervical cystic mass for which he was operated. Pathological examination of the surgical specimen found a lymph node metastasis of papillary carcinoma. The thyroidectomy performed afterwards found a papillary microcarcinoma that had gone unnoticed in the initial radiological examinations. Discussion and Conclusion:Latero-cervical cysts are usually benign, especially in young subjects. But the possibility of a metastatic lesion, in particular of a thyroid carcinoma, must be raised before such situations,hence the value of a good diagnostic strategy.