Peripheral calcifying cystic odontogenic tumour and peripheral dentinogenic ghost cell tumour: an updated systematic review of 117 cases reported in the literature.
OBJECTIVE
To integrate the available data published on peripheral calcifying cystic odontogenic tumour (CCOT) and peripheral dentinogenic ghost cell tumour (DGCT) into a comprehensive analysis of its clinical and radiologic features.


METHODS
An electronic search was undertaken in May, 2016. Eligibility criteria included publications reporting cases of peripheral CCOTs/DGCTs having enough clinical, radiological and histological information to confirm a definite diagnosis. Demographic data, lesion site and size, treatment approach and recurrence were analyzed.


RESULTS
Hundred and thirty-eight lesions were found (65 publications), and 117 lesions (63 publications) with enough information were analyzed (55 CCOTs, 50 DGCTs, 12 unknown). Mean age of patients was 51.3 ± 23.4 (min-max, 1-92), with higher mean age for the DGCTs variant. The lesions were more prevalent in the mandible, anterior region of the jaws, and in the second, sixth and eighth decades, with an equal sexual distribution. About 20% of all lesions showed signs of erosion of the underlying bone, with a higher rate for DGCTs. The mean lesion size was 1.3 ± 0.8 (min-max, 0.4-3.0). Time of follow-up was informed for 37 lesions, with a mean ± SD of 30.2 ± 21.0 months (min-max, 6-84). Almost all lesions were treated by conservative surgery; only three recurrences were reported.


CONCLUSIONS
Peripheral CCOTs/DGCTs are rare lesions. Most of the lesions were treated by simple excision with or without curettage of the underlying bone. As the recurrence rate is very low, a conservative approach seems to be enough for the great majority of cases.
a Department of Prosthodontics, Faculty of Odontology , Malmö University , Malmö , Sweden.
Bruno Ramos
BR
Chrcanovic
b Department of Oral Surgery and Pathology , School of Dentistry, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil.
Ricardo Santiago
RS
Gomez
D005260:Female; D006801:Humans; D007573:Jaw Neoplasms / Q000145:classification* / Q000473:pathology*; D008297:Male; D008334:Mandible / Q000473:pathology; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D018333:Odontogenic Cyst, Calcifying / Q000145:classification* / Q000473:pathology*; D009808:Odontogenic Tumors / Q000145:classification* / Q000473:pathology*
Calcifying; extraosseous; odontogenic cyst; odontogenic tumours