title: Retraction.
abstract: We are sorry that we have to retract the following articles due to significant plagiarism by authors. Archives of Iranian Medicine is a member of Committee on Publication Ethics (COPE) and is devoted to its guidelines and principles. Hereby we apologize for the inconvenience to the readers. --Ameloblastomatous calcifying odontogenic cyst: a case report of a rare histologic variant. Arch Iran Med. 2009 Jul;12(4):417-20. --Peripheral calcifying odontogenic cyst. Arch Iran Med. 2009 May;12(3):309-12. --Desmoplastic ameloblastoma (a hybrid variant): report of a case and review of the literature. Arch Iran Med. 2009 May;12(3):304-8. --Squamous cell carcinoma of the tongue in a 13-year-old boy. Arch Iran Med. 2008 May;11(3):341-3.