An Unusual Giant Osteoma of the Maxillary Sinus: Case Report
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SURGERY
An Unusual Giant Osteoma of the Maxillary Sinus: Case Report E. Kalfarentzos 1 & I. Arapi 2 & V. Triantafyllou 3 & K. I. Tosios 4 & P. Christopoulos 5 Accepted: 6 April 2020 # Springer Nature Switzerland AG 2020
Abstract Paranasal sinus osteoma is the most common benign tumour of the paranasal sinuses. Osteomas are described as giant when they measure more than 3 cm in diameter or weigh over 110 g. Giant osteomas of the maxillary sinus are extremely rare. Aetiology is unknown, but there are three theories about the causes, ‘The Developmental theory’, ‘The Trauma Theory’ and ‘The Infection Theory’. Osteomas are often noticed incidentally in radiological examinations, unless they are symptomatic. Symptomatic osteomas or/and osteomas occupying more than 50% of the sinus volume are treated surgically. An intraoral approach is often preferred for paranasal sinus osteomas. These tumours have also been associated with Gardner’s syndrome. No malignancy transformation has ever been reported and they have an overall excellent prognosis. In this paper, we describe a case of a 37-yearold woman, with a giant osteoma in the left maxillary sinus. The presence of osseous septums attaching the tumour to the walls of the maxillary sinus, creating a star-shaped configuration, has been previously described in only one case. Keywords Osteoma . Giant osteoma . Maxillary sinus . Surgery
Introduction This article is part of the Topical Collection on Surgery * I. Arapi [email protected] E. Kalfarentzos [email protected] V. Triantafyllou [email protected] K. I. Tosios [email protected] P. Christopoulos [email protected] 1
Department of Oral and Maxillofacial Surgery, Dental School, University of Athens, Mediterraneo Hospital 8-12 Ilias Str, 16675, Glyfada, Athens, Greece
2
Dental School, University of Athens, 2 Thivon Str, 115 27, Goudi, Athens, Greece
3
Athens, Greece
4
Department of Oral Pathology, Dental School, University of Athens, 2 Thivon Str., 115 27, Goudi, Athens, Greece
5
Department of Oral and Maxillofacial Surgery, Dental School University of Athens, Mediterraneo Hospital 8-12 Ilias Str,166 75, Glyfada, Athens, Greece
Osteomas are described as slowly developing, excessive growths of mature bone, located almost exclusively in bones with intramembranous ossification, such as the skull bones. Although the aetiology is unknown, there are three theories about the causes. ‘The Developmental Theory’ refers to the growth of osteomas between two different embryogenic originated tissues, ‘The Trauma Theory’ correlates osteomas with a head injury in puberty, when bone generation rhythm is higher and ‘The Infection Theory’ describes primary infectious stimulus prior to an osteoma formation [1]. As they usually originate from the wall of a sinus, paranasal sinus osteomas have an estimated incidence of 3%, as detected on radiological examination in patients with a range of sinonasal symptoms [1]. Paranasal sinus osteomas are the most common benign tumour of the paranasal sinuses, commonly located in the fro
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