Lingual Osseous Choristoma of the Tongue Base: Unusual Presentation of a Rare Entity

Abstract

Osseous lesions of the tongue, also referred to as osseous choristomas, are benign growths of bony tissue. These lesions are not true neoplasms but rather represent growth of normal tissue at an abnormal location. Clinically, they appear as exophytic masses of the tongue, and they are treated by surgical excision. Lingual osseous choristomas are rare entities, with only 71 reported cases in the literature. We present the case of a lingual osseous choristoma of the tongue base in a 21-year-old female. Of the cases of lingual osseous choristoma reported in the literature, ours is only the fifth case to involve this location.

Lingual Osseous Choristoma: Case report and literature review of this rare entity

“…Ossification of lingual thyroid remnants that are commonly seen in women has also, been proposed, but no thyroid tissue has been documented in osseous choristomas ( 3 ). Reactive ossification ensuing through pluripotent or ectopic mesenchymal cells exposed to chronic irritation or trauma ( 13 ) may be expected at the anterior half and the lateral borders of the tongue that are vulnerable to local inflammation or chronic trauma due to continuous lingual movement, swallowing and articulation ( 3 , 5 ). However, intraoral osseous choristomas present well-developed lamellar bone that is not consistent with calcification caused by chronic irritation ( 1 , 7 ).…”

A Case of an Incidentally Removed Lingual Osseous Choristoma

“…Less than 100 cases of osseous choristomas of the oral and maxillofacial region have been reported in the English language literature, and the most common site is the tongue, especially the dorsal posterior third of the tongue near the foramen caecum and circumvallate papillae [5]. Gorini et al provided a comprehensive review of 67 cases of the lingual osseous choristomas [6], and eight additional cases of osseous choristoma of the tongue were reported since their review [5,[7][8][9][10][11][12]. Including newly reported cases and our case, the patients' age ranged from five to eighty-nine years (mean: 28.9), with majority of the patients being in the second or third decades of life, and a strong female predilection (male : female, 19 : 50) was observed.…”

Choristoma kartilaginosa pada lidah: kasus langka

“…Frekuensi choristoma lingual adalah 2,7 sampai 4 kali lebih tinggi pada wanita dibanding pria. 2 Lokasi tersering ditemukan tumor ini adalah pada bagian sepertiga posterior lidah sebanyak 41 kasus (77%), pada bagian lateral lidah sebanyak 9 kasus (17%) dan pada bagian dua pertiga lidah sebanyak 3 kasus (6%). 3 Predileksi pada lidah sering muncul pada posterior dorsum lidah dekat papila sirkumvalata, foramen sekum atau sepertiga bagian dorsum lidah.…”

“…Choristoma kartilaginosa paling sering terjadi di dorsalis tengah lidah. 2 Menurut Zegarelli yang dikutip oleh Heinz et al 2 istilah choristoma kartilaginosa pada lidah harus digunakan hanya untuk lesi yang memiliki pertumbuhan chondromatous eksklusif. Namun, temuan histopatologis choristoma tulang rawan lidah sering dikaitkan dengan kehadiran jenis jaringan lain, seperti tulang dan jaringan adiposa.…”

“…Scivetti et al dianggap pertama kali mempublikasikan choristoma tulang rawan lidah pada tahun 2005. 2 Secara histologis, choristoma kartilaginosa menunjukkan diferensiasi variabel dari jaringan mesenkim, seperti tulang rawan dewasa, jaringan adiposa, atau jaringan tulang. Sangat sedikit laporan choristoma kartilaginosa murni, tanpa unsur adiposa atau jaringan tulang.…”