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Ossifying myositis

Soner Karaali, Ufuk Emekli
Myositis ossificans (MO) is a rare non-neoplastic disorder characterized by heterotopic ossification in soft tissues, mainly muscles. MO traumatica is characterized by ossification of the soft tissues after acute or repetitive trauma, burns, or surgical intervention. Muscular or soft tissue trauma is usually present as the underlying etiology. MO traumatica usually involves the extremity muscles. The number of reported cases involving the masticatory muscles is extremely low. The most common clinical sign of this condition is progressive limitation of mouth opening...
July 10, 2018: Journal of Oral and Maxillofacial Surgery
Sakari Orava, Juha-Jaakko Sinikumpu, Janne Sarimo, Lasse Lempainen, Gideon Mann, Iftach Hetsroni
PURPOSE: The purpose of this study was to report characteristics and outcomes of surgical excision of symptomatic mature posttraumatic myositis ossificans in adult athletes. The hypothesis was that surgical excision of the ossified mass in these circumstances can effectively relief symptoms and result in return to high-level sports with minimal postoperative complications. METHODS: All operations involving excision of posttraumatic heterotopic ossifications performed between 1987 and 2015 were reviewed...
December 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Deepika Savant, Shachar Kenan, Samuel Kenan, Leonard Kahn
We report a case of a 23-year-old female with pain and fullness in the right popliteal fossa. An MRI scan demonstrated an ossified enhancing soft tissue mass. Evaluation of the resected specimen showed a high-grade extraskeletal osteosarcoma juxtaposed to the three zones of myositis ossificans. At 1-year follow-up the patient is alive and disease free. A review of the literature purporting to document such an association failed to demonstrate a single case in which an osteosarcoma and MO with its zonal architecture co-existed...
August 2017: Skeletal Radiology
Yashwant J Mahale, Chaitanya S Vyawahare, Nandkishore V Dravid, Aditya Upase, Romil Rathi
INTRODUCTION: Myositis ossificans circumscripta is a benign non neoplastic ossifying tumor presenting with bone like osteoid tissue extraskelletaly amidst the muscle planes. This condition when not associated with trauma is very trivial and considering the way it mimics certain characteristics, it may be misunderstood as a malignant neoplasm, abscess or antibioma. The aetiology of this atraumatic condition is still indistinct and remains a question unsolved. We would like to report such a case with distinctly unusual presentation that occurred in our institute...
July 2015: Journal of Orthopaedic Case Reports
Otávio Emmel Becker, Rafael Linard Avelar, Elena Riet Correa Rivero, Rogério Belle De Oliveira, Maria Inês Meurer, Aira Maria Bonfim Santos, Orion Luis Haas Júnior, Eduardo Meurer
Traumatic myositis ossificans (TMO) is a rare ossifying disease that occurs in the muscle or soft tissues. A case of TMO isolated in the temporalis muscle is reported. In the case described, calcification in the temporalis muscle was confirmed after computed tomography. Surgery, physiotherapy, and histopathological analysis were performed. One year after treatment, further ossification was present but without interference in function. The most accepted treatment for TMO in the maxillofacial region is excision followed by physiotherapy...
September 2016: Head and Neck Pathology
Vasiliki Perlepe, Benjamin Dallaudière, Patrick Omoumi, Lora Hristova, Afshin Rezzazadeh, Bruno Vande Berg, Jacques Malghem, Frederic Lecouvet
BACKGROUND: Focal myositis is a rare benign inflammatory pseudotumor, presenting as a painful nodular mass within a muscle, and characterized by spontaneous resolution within weeks. PURPOSE: To assess the clinical and imaging findings of focal nodular myositis simulating a neoplasm at clinical examination, with no history of trauma. MATERIAL AND METHODS: This study describes the locations and appearance at ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) of this condition in a series of five patients...
December 2015: Acta Radiologica Open
Vishal S Desai, Rafael Kakazu, Alvin H Crawford, Jerzy W Stanek
BACKGROUND: Myositis ossificans (MO) is a rare, non-neoplastic lesion characterized by heterotopic ossification of soft tissue. The condition is predominantly seen in young adults and adolescents and is most commonly secondary to trauma. Although the exact etiology remains unclear, patients typically present with pain and restricted range of motion following trauma or overuse. MO rarely presents in the popliteal fossa of adult patients and has not been previously reported in that of a pediatric patient...
January 2017: Journal of Pediatric Orthopedics
Brian E Walczak, Christopher N Johnson, B Matthew Howe
Myositis ossificans is a self-limiting, benign ossifying lesion that can affect any type of soft tissue, including subcutaneous fat, tendons, and nerves. It is most commonly found in muscle as a solitary lesion. Ossifying soft-tissue lesions historically have been inconsistently classified. Fundamentally, myositis ossificans can be categorized into nonhereditary and hereditary types, with the latter being a distinct entity with a separate pathophysiology and treatment approach. The etiology of myositis ossificans is variable; however, clinical presentation generally is characterized by an ossifying soft-tissue mass...
October 2015: Journal of the American Academy of Orthopaedic Surgeons
Y Inagaki, T G Kashima, E S Hookway, Y Tanaka, A B Hassan, U Oppermann, N A Athanasou
Dentine matrix protein 1 (DMP-1) is a non-collagenous matrix protein found in dentine and bone. It is highly expressed by osteocytes and has been identified in primary benign and malignant osteogenic bone tumours. Bone formation and matrix mineralisation are seen in a variety of benign and malignant soft tissue tumours and tumour-like lesions, and in this study, we analysed immunohistochemically the DMP-1 expression in a wide range of soft tissue lesions (n = 254) in order to assess whether DMP-1 expression is useful in the histological diagnosis of soft tissue tumours...
April 2015: Virchows Archiv: An International Journal of Pathology
Anna Pàmies, Alex Samitier, Javier Rodríguez-Fernández, Ramon Fontova
No abstract text is available yet for this article.
May 2015: Reumatología Clinica
Luis Eduardo Almeida, Andrea Doetzer, Flavio Camejo, Jose Bosio
INTRODUCTION: Myositis ossificans (MO) is characterized as heterotopic bone formation within muscle. MO rarely occurs in the head and neck region. Excision of the heterotopic bone is the standard treatment. This report summarizes a case of a 12-year old female with MO involving the lateral pterygoid muscle. The heterotopic bone was excised using an intraoral incision. Despite intensive physical therapy, the operation failed as evidenced by new bone formation in the area within three weeks of the operation...
2014: International Journal of Surgery Case Reports
Rudolph H Houben, Neveen A T Hamdy, Jaap T van Dissel, Inger B Schipper
A 58-year-old woman with myositis ossificans traumatica came to our trauma outpatient clinic because of cutaneous perforation of one of the ossifications. This patient developed myositis ossificans traumatica after liposuction of both upper legs 30 years ago, which condition was complicated by a chronic infection of the ossified right quadriceps muscle, a walking limitation, and a loss of range of motion. Myositis ossificans traumatica is a rare disorder associated with trauma- triggered ossification of otherwise normal muscle tissue...
2014: Nederlands Tijdschrift Voor Geneeskunde
Alexandra von Baer, Alexander Ehrhardt, Daniel Baumhoer, Regine Mayer-Steinacker, Markus Schultheiss, Thair Abdul-Nou, Thomas Mentzel, Falko Fend, Peter Möller, Gernot Jundt, Thomas F E Barth
Extraskeletal osteosarcoma is a rare neoplasia within the broad differential diagnostic spectrum of calcifying intramuscular lesions. We present a case of a slowly increasing mass within the left vastus lateralis muscle. At first presentation the patient showed a partially calcified well defined mass with a diameter of 5 cm and with no direct contact to the femur. A biopsy from the periphery revealed an ossifying lesion compatible with myositis ossificans. The patient returned 18 months later with the lesion having increased to a diameter of 25 cm...
October 2014: Pathology, Research and Practice
Cuneyt Calisir, Atacan Emre Kocman, Cigdem Oztunali, Deniz Arik, Mehmet Uzuner, Cengiz Cetin
Fibro-osseous pseudotumor (FOPT) is a rare and benign ossifying lesion. Described as the superficial variant of myositis ossificans (MO), this rare entity mostly occurs in the subcutaneous tissues of the digits. The FOPT clinicopathological features may mimic a variety of benign and malignant soft tissue lesions, and the diagnosis can be difficult when it arises in an unusual anatomic location. In this report we describe the clinical and radiological features of a case of an FOPT that involved the hypothenar region of the hand...
October 2014: Japanese Journal of Radiology
Paolo Boffano, Emanuele Zavattero, Giovanni Bosco, Sid Berrone
Myositis ossificans is a disease that is characterized by nonneoplastic, heterotopic bone formation within a muscle. Myositis ossificans traumatica, also called myositis ossificans circumscripta, is a disease in which muscles are ossified presumably following acute trauma, burns, surgical manipulation, or repeated injury. It is often remitted after surgical excision though some patients have repeated recurrences. Myositis ossificans traumatica of masticatory muscles is not frequently reported in the literature, with the most common clinical finding being a progressive limitation of motion in the mandible...
March 2014: Craniomaxillofacial Trauma & Reconstruction
Atif Ali Hashmi, Babar Malik, Muhammad Muzzammil Edhi, Naveen Faridi, Muhammad Ashraful
INTRODUCTION: Lipoma is a benign soft tissue neoplasm that may contain mesenchymal elements, as a result of metaplastic process. Ossification in benign and malignant soft tissue tumors can also manifest due to metaplastic process. CASE PRESENTATION: A 45 year old woman presented with a large thigh mass. The mass was developed one and a half year ago which insidiously increased in size and was associated with movement restriction. Radiological findings revealed soft tissue neoplasm on antero-medial aspect of thigh encircling the femur and displacing adjacent muscles...
January 16, 2014: International Archives of Medicine
Wendy Lynne Parker, Jacqueline C Hodge, Marie-Lucie Lessard
Myositis ossificans (MO) is a benign, progressive, ossifying lesion that displays a characteristic zonal histological appearance. MO traumatica is a localized form of heterotopic bone formation, associated with repetitive micro- and/or macrotrauma in the majority of cases. The importance of imaging to differentiate MO from sarcomatous change and to determine maturity of the lesion is identified because suboptimal operative intervention on immature MO inevitably results in recurrence. A severe case of MO in a 24-year-old paraplegic man with chronic bilateral greater trochanteric pressure sores is presented, and the importance of the MO in the etiology and treatment of this case is discussed...
2004: Canadian Journal of Plastic Surgery
Young-Ah Cho, Hye-Jung Yoon, Seong-Doo Hong, Jae-Il Lee, Sam-Pyo Hong
A 2-year-old boy presented with a giant mass in the masticatory space. The mass exhibited a lobulating ossification, with no attachment to the adjacent normal bone. An enucleation was performed under the tentative diagnosis of extra-articular synovial chondromatosis, benign ossifying neoplasm, non-neoplastic heterotopic ossification, or low-grade malignancy. Upon microscopic examination, the excised mass was composed of multiple osteocartilaginous areas. We hereby present detailed clinicopathological findings...
May 2013: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Mohammad Javdan, Mohammad Ali Tahririan
Fibro-osseous pseudotumor of the digit is an unusual ossifying soft tissue lesion, which is usually an ill-defined soft tissue mass in radiography, with focal calcification, especially in the proximal phalanx. It predominantly affects young adults and, unlike myositis ossificans, is more common in women. The current case is a 30-year-old man who presented with pain and swelling on the dorsum of middle phalanx of the left index finger without history of trauma. Diagnosis of this lesion requires a high index of suspicion and should be differentiated from myositis ossificans, turret exostosis, and extra-skeletal osteosarcoma, which are discussed...
2012: Advanced Biomedical Research
A M Tambella, A Palumbo Piccionello, F Dini, C Vullo, G Rossi, P Scrollavezza
A 20-month-old male Rottweiler dog was presented with the complaint of chronic right forelimb lameness that was unresponsive to conservative treatment. Physical examination allowed for the topographical identification of the source of the problem as a firm enlargement of the soft tissues that was partially movable from humeral bone and compatible with an alteration of the triceps brachii muscle. Radiographic images showed signs that were highly suggestive of myositis ossificans. Computed tomography allowed for a more accurate characterization of the lesion, to exclude involvement of the elbow joint and humeral bone, and to localize anatomically the lesion in the caput accessorium and longum of the triceps brachii muscle...
2013: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
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