Fungal Osteomyelitis of Temporomandibular Joint and Skull Base Caused by Chronic Otitis Media

Kim, Bokeum; Park, Keun Jeong; Lee, Jung Eun; Park, Younjung; Kwon, Jeong-Seung; Kim, Seong Taek; Jh, Choi; Ahn, Hyung‐Joon

doi:10.14476/jomp.2020.45.1.12

Cited by 1 publication

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“…The potential routes of fungal myositis are an invasion of the musculature via contiguous sites[ 20 ], hematogenous dissemination, and trauma with direct seeding of spores. The use of needles or intravenous catheters as iatrogenic factors has also been reported[ 21 ].…”

Section: Discussionmentioning

confidence: 99%

Trismus originating from rare fungal myositis in pterygoid muscles: A case report

Bi¹,

Wei²,

Wang³

et al. 2021

WJCC

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BACKGROUND Trismus is a common problem with various causes. Any abnormal conditions of relevant anatomic structures that disturb the free movement of the jaw might provoke trismus. Trismus has a detrimental effect on the quality of life. The outcome of this abnormality is critically dependent on timely diagnosis and treatment, and it is difficult to identify the true origin in some cases. We present a rare case of trismus due to fungal myositis in the pterygoid muscle, excluding any other possible pathogenesis. CASE SUMMARY The patient presented with a 2-mo history of restricted mouth opening. Computed tomography showed obvious enlargement of the left pterygoid muscles. Furthermore, the patient had trismus without obvious predisposing causes. The primary diagnosis was pterygoid myosarcoma. Consequently, lesionectomy of the left pterygoid muscle was performed. Intraoperative frozen biopsy implied the possibility of an uncommon infection. Postoperative pathologic examination confirmed myositis and necrosis in the pterygoid muscle. Fungi were detected in both muscle tissue and surrounding necrotic tissue. The patient recovered well with antifungal therapy and mouth opening exercises. The rarity of fungal myositis may be responsible for the misdiagnosis. Although the origin of pathogenic fungi is still unknown, we believe that both hematogenous spread and local invasion could be the most likely sources. To the best of our knowledge, this is the ﬁrst case in the literature that reported fungal myositis in pterygoid muscles as the only reason that results in trismus. CONCLUSION Surgeons should remain vigilant to the possibility of trismus originating from fungal myositis.

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Section: Discussionmentioning

confidence: 99%