Intramuscular myxoma of the hyoglossus muscle: A case report and literature review

Abstract

Intramuscular myxoma (IM) is a benign intramuscular neoplasm composed of fibroblasts and abundant myxoid stroma. IMs most commonly affect larger skeletal muscles, while those affecting the oral and maxillofacial regions are rare, with a small number of documented cases in the available literature. The aim of the present study was to describe a highly rare case of an IM within the hyoglossus muscle of the tongue in a 74-year-old male. The patient presented with a painless mass in the submental space that had been growing slowly for more than five years. A computed tomography scan revealed a hypodense lesion located in the root of the tongue. The mass was easily excised with thin margins, including only a small amount of the adjacent muscle tissue. The pathological diagnosis of the mass was an IM. The patient made an excellent recovery following the surgery and the follow-up three years later revealed no local recurrence. IMs of the hyoglossus muscle are highly rare, however must be considered in the differential diagnosis of swellings in the root of the tongue region.

Intramuscular myxoma of the longus colli mistaken for a cervical rootlet schwannoma

“…Fewer than 30 adult cases of head and neck IM have been documented in the literature, most commonly involving the muscles of mastication and cervical paraspinal muscles 9–13. Other reported locations of IM within the head and neck include the geniohyoid, hyoglossus, sternocleidomastoid and trapezius muscles 14–17. The presented case is the first example of an IM arising in the longus colli muscle.…”

Laryngopharyngeal fibromyxoma (clinical observation)

“…Эти опу-холи чаще встречаются в сердце, подкожной и апонев-ротической ткани, органах мочеполовой системы, в коже и др. [1][2][3][4][5]. В литературе можно найти публи-кации, посвященные поражению лор-органов вторич-ной миксомой [6,7].…”

“…Слизеподоб-ная масса является гиалуроновой кислотой, так как растворяется гиалуронидазой и дает реакцию на муко-иды. Считается, что первым термин «миксома» ис-пользовал R. Virchow в 1871 г., описывая слизистую опухоль пупочной области [1]. Миксома развивается из остатков слизистой ткани эмбрионального периода.…”