The number of surgical procedures frequently related to the development of surgical ciliated cyst of maxilla, e.g. midface orthognathic surgeries and maxillary sinus floor augmentation with alveolar bone grafting, has increased. Despite the low prevalence of surgical ciliated cyst of maxilla, surgeons, clinicians and pathologists must be aware of this lesion and include it in the differential diagnosis of maxillary cysts in patients with a previous local surgery. In this paper, we present two cases of surgical ciliated cyst of maxilla, and discuss the clinical, radiological and histopathological findings, as well as the differential diagnosis of this rare lesion. I N TRODUC TIONSurgical ciliated cyst of the maxilla, also called as postoperative maxillary cyst, is a rare lesion that can develop as a delayed complication after surgeries involving the maxillarymalar complex and maxillary sinus. 1,2 This cyst was first described in the Japanese literature by Kubo in 1927, 3 and occurred nine years after a radical surgery to treat chronic

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