title: Peri-implant squamous odontogenic tumor.
abstract: Squamous odontogenic tumor (SOT) is a benign, locally infiltrative intraosseous tumor composed of well-differentiated squamous epithelium in a fibrous stroma. It seems to derive from the epithelial rests of Malassez in the periodontal ligament space. It presents an odontogenic origin, involving both the upper and lower maxillary bone, mainly areas without teeth or connective tissue of the odontogenic cysts. Clinically, SOT could be asymptomatic (3 cases), notwithstanding it is mainly characterized by pain, swelling, and tooth/teeth mobility. The most typical presentation of SOT is a slowly growing endobony lesion arising within a single periodontal location. Frequent misdiagnosis concerns either ameloblastoma and squamous cell carcinoma and fibroma. Since its first description in 1975, less than 50 cases have been identified. In light of the few reported cases, there are no consistently recorded clinical and radiographic features of SOT, and there is no predictable sex or site predilection. Diagnosis is predicated on recognition of the histopathologic features of SOT to obviate possible misdiagnosis of malignancy or ameloblastoma.We report the first case of SOT that arose in the vicinity of an implant. Through a meticulous review of literature, we discuss current etiology, pathogenesis, and treatment.
authors.affiliation: Departments of Plastic and Reconstructive Surgery, University of Florence, Florence, Italy. tommasoagostini@ymail.com
authors.forename: Tommaso
authors.initials: T
authors.lastname: Agostini
authors.forename: Roberto
authors.initials: R
authors.lastname: Sacco
authors.forename: Roberto
authors.initials: R
authors.lastname: Bertolai
authors.forename: Alessandro
authors.initials: A
authors.lastname: Acocella
authors.forename: Maurizio
authors.initials: M
authors.lastname: Colafranceschi
authors.forename: Davide
authors.initials: D
authors.lastname: Lazzeri
mesh_terms: D001706:Biopsy; D015921:Dental Implants; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008441:Maxillary Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D009808:Odontogenic Tumors / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D011859:Radiography; D013524:Surgical Flaps
chemical_list: D015921:Dental Implants