Omohyoid Muscle Syndrome Research Articles

Diagnostic value of high-frequency ultrasound in omohyoid muscle syndrome.

To investigate the diagnostic value of high-frequency ultrasound in omohyoid muscle syndrome. A retrospective analysis of 11 patients diagnosed with omohyoid muscle syndrome was carried out, and the characteristics of high-frequency ultrasound images were summarized. Ultrasonography of the omohyoid muscle showed a narrow band of hypoechoic muscle bundle. The ultrasonographic manifestation of omohyoid muscle syndrome showed a thickening of the omohyoid muscle on the affected side. The omohyoid muscle on the affected side bulged forward during swallowing and lifted the overlying sternocleidomastoid muscle. The difference between the thickness of the omohyoid muscle intermediate tendon on the affected side and the healthy side at rest was statistically significant (t = 58.23, P < 0.001). The difference between the thickness of the affected omohyoid muscle intermediate tendon at rest and during swallowing was statistically significant (t = 14.57, P < 0.001). There was no statistically significant difference between the thickness of the omohyoid muscle intermediate tendon on the healthy side at rest and during swallowing (t = 0.56, P > 0.05). High-frequency ultrasound is the preferred imaging method in the diagnosis of omohyoid muscle syndrome.

OMOHYOID MUSCLE SYNDROME: A CASE REPORT

Omohyoid muscle syndrome (OMS) is one of the rare causes of lateral neck swelling during swallowing and it is often a worrisome observation due to the concern of malignancy and cosmetic deformity. Anatomical variation, congenital weakness, or trauma may cause incompetence of the fascial-retaining mechanism and subsequently OMS. Its prevalence is unknown as only a few cases were reported in the past and none in Malaysia. Diagnosing OMS is very challenging. Hence, imaging techniques like real time ultrasound or dynamic computed tomography can be useful in assessing the affected muscles.

A Systematic Review of the Omohyoid Muscle Syndrome (OMS): Clinical Presentation, Diagnosis, and Treatment Options.

Omohyoid muscle syndrome (OMS) is a condition that causes a X-shaped lateral neck lump on swallowing, caused by the failure of the central tendon of the omohyoid muscle to restrict movement of the muscle during swallowing. We aim to review the etiology, pathophysiology, diagnostic tests, and management options for this condition. Pubmed, MEDLINE, EMBASE, and Cochrane databases were searched for all articles and abstracts related to OMS up to 29th July 2020. A systematic review was performed, data extracted from relevant full text articles. Both quantitative data and qualitative data were analyzed. Twenty cases of OMS were reported. Patients presented at a mean age of 36.0. All cases were Asian. There is a 7:3 ratio of males to females. The most common symptom was a transient neck mass. Most cases were managed conservatively with good prognosis. Open or endoscopic transection of the muscle and ultrasound-guided botulinum toxin injection were 3 treatment options, with no recurrence at 4 years, 6 months, and 6 months respectively. OMS could be genetic as all cases were Asian in ethnicity. The deep cervical fascia which usually envelopes the omohyoid muscle may be weakened by stress as 20% of cases had a preceding traumatic event. Real-time ultrasonography establishes the diagnosis, demonstrating the anterolateral displacement of the sternocleidomastoid muscle by a thickened omohyoid muscle during swallowing. Surgical transection can achieve cure, but due to limited studies available, they should be reserved for patients who are extremely bothered. Intramuscular injection of botulinum toxin is an effective alternative, but recurrence is expected.

A case of omohyoid muscle syndrome

A case of omohyoid muscle syndrome

Theory and practice of laparoscopic surgery against omohyoid muscle syndrome.

Omohyoid muscle syndrome (OMS) is a rare disease characterized as a protruding lateral neck mass feature during swallowing. Because there is a 5 cm scar after traditionally surgery, we designed a laparoscopic surgery procedure to meet the cosmetic needs of patients. From the year 2006 to 2016, there were 3 patients diagnosed as omohyoid muscle syndrome that underwent laparoscopic surgery. Operative and postoperative follow-up data were summarized. Average surgery time was 35 ± 13 min. Average blood loss was 3 ± 1 mL. No case converted to open surgery. No major vessel or nerve damage complications occurred. After the surgery, the neck mass completely disappeared during swallowing, and there were no operative scars on the neck. All patients were discharged within 2 days. During the follow-up of a year, no recurrence occurred. In conclusion, the endoscopic procedure is suitable for OMS. It's a safe, effective and cosmetic surgery.

Laparoscopic Omohyoid Muscle Transection Surgery

Laparoscopic Omohyoid Muscle Transection Surgery

肩胛舌骨肌综合征3例报道

目的：探讨肩胛舌骨肌综合征的临床特点，减少误诊及漏诊。方法：回顾性分析3例肩胛舌骨肌综合征的诊治资料及文献报道。结果：3例肩胛舌骨肌综合征患者(男2例、女1例)，临床上表现为吞咽时右侧颈部肿块2例及双侧颈部肿块1例。3例均采取手术治疗，即粘连肌肉松解、肩胛舌骨肌下腹切断或/和部分切除治疗方法，全部治愈、无复发。结论：肩胛舌骨肌综合征临床较少见，只要提高对此病的认识就会减少误诊、且手术效果良好。 Objective: To investigate the clinical characteristics of omohyoid muscle syndrome for the purpose of decreasing the rate of misdiagnosis and erroneous diagnosis. Methods: The clinical data of diagnosis and treatment in 3 patients with omohyoid muscle syndrome were summarized retro-spectively, and analyzed with the literatures reports. Results: The patients with omohyoid muscle syndrome included 2 males and 1 female; they clinically presented with evident bump of lower sternocleidomastoid muscle during swallowing. All 3 patients underwent surgery, including dis-section and lysis of the muscles, cut or resection of the lower belly of the omohyoid muscles. All patients were completely cured without recurrence. Conclusions: Omohyoid muscle syndrome is a rare clinical disease; the misdiagnosis and erroneous diagnosis may be reduced by high recognition to this disease; and this disease can be cured by surgery.

Ultrasound‐guided injection of botulinum toxin in a patient with omohyoid muscle syndrome: A case report

Omohyoid muscle syndrome has a characteristic feature of a protruding lateral neck mass during swallowing. We present a case of omohyoid muscle syndrome diagnosed based on the clinical presentation and a dynamic imaging study. Botulinum toxin was injected into the inferior belly of one omohyoid muscle, and the neck mass resolved.

肩甲舌骨筋症候群例

Omohyoid muscle syndrome (OMS) featuring marked omohyoid muscle bulging during swallowing, not present at rest, was first reported by R.B. Zachary in 1969. We report a case of this condition. A 41-year-old woman reporting right neck discomfort during swallowing was found to have bulging corresponding to the omohyoid muscle course, diagnosed as OMS. We excised the muscle, found to be of normal size, at the central tendon under general anesthesia. No recurrence has been seen in the 12 months post operative. Pathological findings included omohyoid muscle degeneration, hypertrophy, and atrophy. Cases reported in Japan numbered 22 since 1983, 10 of which were treated surgically and remedied satisfactorily. No common features were seen, although normal and abnormal findings were present in macroscopic and pathological intra- or postoperative examination. OMS is benign, and warrants surgery only in cases of severe subjective symptoms or at the subject's request.

Pseudodysphagia Due to Omohyoid Muscle Syndrome

Omohyoid muscle syndrome (OMS) is a rare clinical condition that has the pathognomonic feature of the appearance of a lateral neck mass when swallowing due to dysfunction of the omohyoid muscle (OH). We present two cases of typical OMS with electrophysiologic and dynamic imaging studies. The study results indicate that OMS is caused mainly by the loosening of the fascial attachment to the intermediate tendon of the OH. The characteristic clinical features and pathomechanism underlying OMS are also discussed.

肩甲舌骨筋症候群例

Omohyoid muscle syndrome was first reported in 1969. Only two cases of this disease were reported in Japan. The patient was a 27-year-old woman, who had been complaining of so-called globus sensation during swallowing for several years. She also had slight foreign body sensation in the right neck. Right lateral mass during swallowing was detected in correspondence with the omohyoid muscle by ultrasonography. Surgery was carried out under general anesthesia. The muscle was excised at the central tendon. The patient immediately became free from globus sensation during swallowing. Pathological examination did not demonstrate any specific change in the muscle specimen except for hypertrophy.

Omohyoid Muscle Syndromeの一症例

Omohyoid muscle syndrome was reported by R. B. Zachary for the first time in 1969. The syndrome is characterized by remarkable distention of the omohyoid muscle during swallowing, which completely disappear at rest.This case was a 40-year-old male who complained of discomfort of the throat and bulging of the neck during swallowing over several years, and he was diagnosed as having omohyoid muscle syndrome. The operation was performed under local anesthesia in 1990, and the omohyoid muscle was simply transected at superior belly of this muscle. Following the operation, abnormal distension during swallowing completely disappeared. The patient has had no symptoms for 9 months postoperatively and no signs of recurrence have been found.Although the pathogenesis of omohyoid muscle syndrome is still unknown, some investigators have reported that pathological examination of the removed muscle showed myogenic degeneration. In our case, the pathological findings revealed slight degeneration of omohyoid muscle.

Ｏｍｏｈｙｏｉｄ ｍｕｓｃｌｅ ｓｙｎｄｒｏｍｅ 臨床的および病理学的特徴とその成因について

The omohyoid muscle syndrome was first reported by Ye Biyuan in 1980. During swallowing the omohyoid muscle bulges remarkably, while it disappears completely at rest. The pathogenesis is still obscure. Ten young males suffering from this syndrome were documented in his paper.Recently we have encountered a case of fifteen year-old boy who complained of neck bulge in the left during swallowing. He sprained the neck in Feb. 1981 and first noticed his left cervical mass during swallowing in April 1981. He visited our clinic in Feb. 1982 because his cervical mass increased in size.The mass appeared during swallowing and phonation in correspondence with the course of the omohyoid muscle. Operation was carried out under local anesthesia. A transverse skin incision in the left side was made starting from the midpoint of thyroid cartilage. The superior belly of the omohyoid muscle was exposed and found to be hypertropic. The superior belly was excised and the bulge disappeared immediately.The histopathological findings showed the waxy change and the increase in size in some muscle fibers. The pathological diagnosis, therefore, was myogenic atrophy of the omohyoid muscle.The patient is doing well six months after the operation.