Logo American Journal of Case Reports

Call: 1.631.629.4328
Mon-Fri 10 am - 2 pm EST

Contact Us

Logo American Journal of Case Reports Logo American Journal of Case Reports Logo American Journal of Case Reports

25 September 2019 : Case report  Japan

Proliferative Fasciitis/Myositis Involving the Facial Muscles Including the Masseter Muscle: A Rare Cause of Trismus

Challenging differential diagnosis, Rare disease

Tomoyo M. Nishi1ABDEF, Shun Yamashita1ABDEF, Yuka N. Hirakawa1ADEF, Naoko E. Katsuki1ADEF, Masaki Tago1ABDEFG*, Shu-ichi Yamashita1ADEG

DOI: 10.12659/AJCR.917193

Am J Case Rep 2019; 20:1411-1417

Abstract

BACKGROUND: Proliferative fasciitis/myositis is a benign disease that can be treated conservatively. However, some patients are mistakenly treated surgically because of a misdiagnosis of the condition as a malignant tumor.

CASE REPORT: A 50-year-old Japanese man developed swelling in his left cheek 12 days before admission; he developed a fever and trismus 3 days later. He was admitted to our hospital because of worsening of his condition despite treatment with sitafloxacin for 5 days and needle-aspiration drainage. On admission, he had a fever of 38.1°C, swelling in his left cheek spreading to the lower jaw, and several dental caries. Although ceftriaxone and clindamycin were administered for 7 days because an odontogenic infection was suspected, his condition did not improve. T2-weighted magnetic resonance imaging of the facial muscles on Day 5 of hospitalization showed swelling and high-intensity signals in the left masseter, temporalis, and pterygoid muscles. Macroscopic findings from a biopsy of the left temporalis muscle performed on Day 17 showed white and thickened fascia. Histopathological examination revealed fibrous hyperplasia of the fascia, increased fibrous connective tissue between muscle fibers, and infiltration of inflammatory cells, providing not a definite but a compatible diagnosis of proliferative fasciitis/myositis. Beginning on Day 18, the patient’s fever lessened with gradual improvement of his facial swelling and trismus.

CONCLUSIONS: It is imperative to include proliferative fasciitis/myositis as a possible diagnosis when patients present with facial swelling and trismus of unknown cause.

Keywords: Fasciitis, Masseter Muscle, myositis, Pterygoid Muscles, Trismus, Facial Muscles, Fever, Magnetic Resonance Imaging, Middle Aged, Tomography, X-Ray Computed

0 Comments

SARS-CoV-2/COVID-19

11 August 2022 : Case report  Japan

A 32-Year-Old Man with Persistent Olfactory Dysfunction Following COVID-19 Whose Recovery Was Evaluated by ...

Am J Case Rep In Press; DOI: 10.12659/AJCR.936496  

09 August 2022 : Case report  Japan

A Case of Segmental Arterial Mediolysis of Multiple Visceral Arteries Following Anti-COVID-19 Vaccination: ...

Am J Case Rep In Press; DOI: 10.12659/AJCR.937505  

29 July 2022 : Case report  Indonesia

Posterior Myocardial Infarction in a 45-Year-Old Javanese Woman with a 1-Month History of COVID-19-Related ...

Am J Case Rep In Press; DOI: 10.12659/AJCR.937105  

08 July 2022 : Case report  Australia

Unusual Case of Painful Glossitis and Xerostomia Following Vaccination with Pfizer-BioNTech SARS-CoV-2 (BNT...

Am J Case Rep In Press; DOI: 10.12659/AJCR.937212  

In Press

17 Aug 2022 : Case report  Saudi Arabia

Musical Ear Syndrome in a Patient with Unilateral Hearing Loss: A Case Report

Am J Case Rep In Press; DOI: 10.12659/AJCR.936537  

16 Aug 2022 : Case report  Hong Kong

Concurrent Bell’s Palsy and Facial Pain Improving with Multimodal Chiropractic Therapy: A Case Report and L...

Am J Case Rep In Press; DOI: 10.12659/AJCR.937511  

16 Aug 2022 : Case report  USA

Coronary Artery Stent Dislodgement and Loss in the Bloodstream: A Case Report and Management Options

Am J Case Rep In Press; DOI: 10.12659/AJCR.937598  

16 Aug 2022 : Case report  Saudi Arabia

A Pituitary Abscess Caused by Morganella morganii: A Case Report

Am J Case Rep In Press; DOI: 10.12659/AJCR.936743  

Most Viewed Current Articles

13 Jul 2022 : Case report  USA

Whistling Scrotum: An Unusual Presentation of Pneumomediastinum in the Setting of an Open Scrotal Wound

DOI :10.12659/AJCR.936441

Am J Case Rep 2022; 23:e936441

23 Feb 2022 : Case report  USA

Penile Necrosis Associated with Local Intravenous Injection of Cocaine

DOI :10.12659/AJCR.935250

Am J Case Rep 2022; 23:e935250

06 Dec 2021 : Case report  Brazil

Lipedema Can Be Treated Non-Surgically: A Report of 5 Cases

DOI :10.12659/AJCR.934406

Am J Case Rep 2021; 22:e934406

17 Feb 2022 : Case report  Oman

Myocarditis, Pulmonary Hemorrhage, and Extensive Myositis with Rhabdomyolysis 12 Days After First Dose of P...

DOI :10.12659/AJCR.934399

Am J Case Rep 2022; 23:e934399

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923