Bilateral Coronoid Process Hyperplasia With Pseudocartilaginous Joint Formation: Jacob Disease

Choi, James G.; Kim, Sang Yoon; Perez‐Atayde, Antonio R.; Padwa, Bonnie L.

doi:10.1016/j.joms.2012.05.029

Cited by 17 publications

(11 citation statements)

References 10 publications

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“…Extra-articular causes of limited opening are myofascial pain disorder and coronoid hyperplasia. Intra-articular reasons include internal derangement, intra-articular pathology, and TMJ ankylosis [ 12 ]. Coronoid hyperplasia should be differentiated from Jacob disease where trismus is caused by pseudo-joint formation [ 13 ].…”

Section: Discussionmentioning

confidence: 99%

“…Microscopic examination of Jacob disease shows formation of a pseudo-cartilaginous joint between coronoid process and the zygoma. This pseudo-joint is characterized by reactive new bone on the surface of the coronoid process and a fibro-cartilaginous cap, probably as a consequence of traumatic injury with chronic friction between the two bones [ 12 ]. In contrast, coronoid hyperplasia shows histologically normal bone [ 5 ].…”

Section: Discussionmentioning

confidence: 99%

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Trismus Due to Bilateral Coronoid Hyperplasia

Choi

Kim

et al. 2014

Maxillofacial Plastic and Reconstructive Surgery

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Bilateral coronoid hyperplasia causes painless progressive trismus, resulting from coronoid process impingement on the posterior aspect of the zygomatic bone. The etiology of coronoid hyperplasia is unclear, with various theories proposed. An endocrine stimulus, increased temporalis activity, trauma, genetic inheritance and familial occurrence have all been proposed, but no substantive evidence exists to support any of these hypotheses. Multiplanar reformatting of axial scans and 3-dimensional reconstruction permit precise reproduction of the shape and size of the coronoid and malar structures, and relationships of all structures of the temporal and infratemporal fossae. This case shows remarkably increased mouth opening by coronoidectomy in a patient who complained of trismus due to hyperplasia of coronoid process.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Trismus Due to Bilateral Coronoid Hyperplasia

Choi

Kim

et al. 2014

Maxillofacial Plastic and Reconstructive Surgery

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“…Jacob's disease is a disease with discrete clinical symptoms, leading to a progressive reduction of mouth opening if initial diagnosis and definitive treatment is delayed 6 . Lateral deviation in mouth opening when only one side is affected or alteration in the malar region can be a strong indication of the disease 7 .…”

Section: Discussionmentioning

confidence: 99%

“…Men are predominantly more affected (63%) and it is mainly diagnosed at the age of 30 years. The most accepted treatment is resection of the coronoid process 6 .…”

Section: Introductionmentioning

confidence: 99%

Development of temporomandibular ankylosis after diagnosis of Jacob’s disease: clinical and tomographic assessment

Avelar¹,

Neto²,

Gaspar³

et al. 2020

Arch Health Invest

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Jacob's disease is a rare condition that consists of the formation of a pseudo joint structure between the mandibular coronoid process and the zygomatic bone, resulting in limited mouth opening. The disease is difficult to diagnose and etiology is uncertain. This article describes a clinical case of a 6-year-old child with limited mouth opening, which resulted in the formation of a temporomandibular ankylosis leading to complete immobility due to delayed diagnosis and treatment of the disease. A review of this pathology and the most precise imaging exams are discussed for the early and differential diagnosis of the disease. Descriptors: Ankylosis; Temporomandibular Joint; Temporomandibular Joint Disorders. Referências Wang WH, Xu B, Zhang BJ, Lou HQ. Temporomandibular joint ankylosis contributing to coronoid process hyperplasia. Int J Oral Maxillofac Surg. 2016;45(10):1229-33. Zhong SC, Xu ZJ, Zhang ZG, Zheng YH, Li TX, Su K. Bilateral coronoid hyperplasia (Jacob disease on right and elongation on left): report of a case and literature review. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Mar;107(3):e64-7. Coll-Anglada M, Acero-Sanz J, Vila-Masana I, Navarro-Cuéllar C, Ochandiano-Caycoia S, López de-Atalaya J, Navarro-Vila C. Jacob's disease secondary to coronoid process osteochondroma. A case report. Med Oral Patol Oral Cir Bucal. 2011;16(6):e708-10. Yesildag A, Yariktas M, Doner F, Aydin G, Munduz M, Topal U. Osteochondroma of the coronoid process and joint formation with zygomatic arch (jacob disease): report of a case. Eur J Dent. 2010;4(1):91-4. Çorumlu U, Kopuz C, Demir MT, Pirzirenli ME. Bilateral elongated mandibular coronoid process in an Anatolian skull. Anat Cell Biol. 2016;49(3):217-20. Choi JG, Kim SY, Perez-Atayde AR, Padwa BL. Bilateral coronoid process hyperplasia with pseudocartilaginous joint formation: Jacob disease. J Oral Maxillofac Surg. 2013;71(2):316–21. Losa-Muñoz PM, Burgueño-García M, González-Martín-Moro J, Sánchez-Burgos R. Osteochondroma of coronoid process: a rare etiology of jacob disease. Craniomaxillofac Trauma Reconstr. 2014;7(4):306-9. Escuder i de la Torre O, Vert Klok E, Marí i Roig A, Mommaerts MY, Pericot i Ayats J. Jacob's disease: report of two cases and review of the literature. J Craniomaxillofac Surg. 2001;29(6):372-76. Hernández-Alfaro F, Escuder O, Marco V. Joint formation between an osteochondroma of the coronoid process and the zygomatic arch (Jacob disease): report of case and review of literature. J Oral Maxillofac Surg. 2000;58(2):227-32. Sreeramaneni SK, Chakravarthi PS, Krishna Prasad L, Raja Satish P, Beeram RK. Jacob's disease: report of a rare case and literature review. Int J Oral Maxillofac Surg. 2011;40(7):753-57. D'Ambrosio N, Kellman RM, Karimi S. Osteochondroma of the coronoid process (Jacob's disease): an unusual cause of restricted jaw motion. Am J Otolaryngol. 2011;32(1):52-4. Shackelford RT, Brown WH. Restricted jaw motion due to osteochondroma of the coronoid process. J Bone Joint Surg Am. 1949;31A(1):107-14.

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“…From the first documentation of Jacob's Disease until 2010, only 50 cases have been reported in literature, although only 39 had histological evidence of pseudoarticulation [5,6]. Reports point to male prevalence (63%), mean age of 30 years-old (5-73 years) [5] and slight predilection for the left side [1]. The first clinical sign and main presenting characteristic is a significantly reduced mouth opening [5].…”

Section: Introductionmentioning

confidence: 99%

Jacob’s Disease: case report

Leal

Moreira

Passador-Santos

et al. 2021

RGO, Rev. Gaúch. Odontol.

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Jacob’s disease or osteochondroma is a rare disease that presents as a pseudo-joint between the coronoid process of the mandible and the posterior surface of the zygomatic bone. The present case report is of an 11-year-old female patient with a maximum mouth opening of 2mm. When evaluating computed tomography with three-dimensional reconstruction, a mushroom-shaped increase in the coronoid process of the mandible on the left side was observed, intimately connected to the zygomatic bone (inferoposterior region of the body of the zygoma), which suggests a pseudoarticulation. Surgical removal of the tumor mass was performed under general anesthesia via intraoral access and is called coronoidectomy. Histopathological, the presence of hyaline cartilage was observed, a condition that is pathognomonic for Jacob’s Disease. Jacob’s disease case reports are still rare in the literature, with mushroom shape and histopathological confirmation due to the presence of hyaline cartilage.

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Bilateral Coronoid Process Hyperplasia With Pseudocartilaginous Joint Formation: Jacob Disease

Cited by 17 publications

References 10 publications

Trismus Due to Bilateral Coronoid Hyperplasia

Trismus Due to Bilateral Coronoid Hyperplasia

Development of temporomandibular ankylosis after diagnosis of Jacob’s disease: clinical and tomographic assessment

Jacob’s Disease: case report

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