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Masseter muscle hypertrophy has been diagnosed rarely in humans with few references reporting concurrent hypertrophy of the medial and lateral pterygoid muscles. The primary inciting cause of this condition is unknown. Treatment in humans is primarily sought for cosmetic reasons with multiple treatment modalities being described including medical and surgical management. This article describes the first reported case of benign masseter and pterygoid muscle hypertrophy in the veterinary literature.<\/jats:p>","DOI":"10.1177\/08987564261447379","type":"journal-article","created":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T11:44:35Z","timestamp":1778499875000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Masseter and Pterygoid Muscle Hypertrophy in a Cat"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2644-1560","authenticated-orcid":false,"given":"Jennifer B.","family":"Alterman","sequence":"first","affiliation":[{"name":"Dentistry and Oral Surgery Department, BluePearl Veterinary Partners (where research was conducted), Midvale, UT, USA"},{"name":"Summit Veterinary Dental Services, Sandy, UT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4932-0035","authenticated-orcid":false,"given":"Cynthia M.","family":"Bell","sequence":"additional","affiliation":[{"name":"Specialty Oral Pathology for Animals, Geneseo, IL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erin E.","family":"Epperly","sequence":"additional","affiliation":[{"name":"Vet.CT"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2026,5,11]]},"reference":[{"issue":"5","key":"e_1_3_2_2_2","first-page":"361","article-title":"Enlargement of the temporal and masseter muscle on both sides","volume":"63","author":"Legg W","year":"1880","unstructured":"Legg W. 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