Extraskeletal osteochondroma near the hip is rare and its pathological diagnosis is based on radiological and histopathological examination. It is vital that such a diagnosis be considered when a discrete, ossified mass is localized in soft tissues, even at atypical sites. Differential diagnoses include myositis ossificans, a lipomatous lesion, a pseudomalignant osseous tumour, an ossifying fibromyxoid tumour, an extraskeletal chondroma with endochondral ossification, synovial (osteo) chondromatosis, tumoural calcinosis, a synovial sarcoma and an extraskeletal osteosarcoma. Clinical awareness of this benign entity is important as no malignant transformation or metastasis has been reported. Marginal excision with histopathological identification is the treatment of choice.
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http://dx.doi.org/10.1097/BPB.0b013e32833ed8e9 | DOI Listing |
J Oral Facial Pain Headache
June 2024
Department of Maxillofacial Surgery, Lithuanian University of Health Sciences, LT-50161 Kaunas, Lithuania.
Osteoma is a rare benign tumor primarily affecting the craniofacial skeleton. Coronary osteomas in the coronoid process are uncommon and asymptomatic until they affect mandibular function. This report presents a case of coronoid osteoma with its diagnosis, treatment and surgical approach.
View Article and Find Full Text PDFRadiol Case Rep
January 2025
Radiology Department, Pediatric Teaching Hospital, Mohammed V University, Rabat, Morocco.
Fibrodysplasia ossificans progressiva is a rare and severely debilitating genetic disorder affecting approximately 1 in 2 million people. It is characterized by progressive heterotopic ossification of soft tissues, leading to the formation of ectopic bone in extraskeletal areas, as well as congenital malformations of the great toes. FOP can also be considered a disorder of osteochondrogenesis, with most musculoskeletal abnormalities related to dysregulated chondrogenesis, such as heterotopic endochondral ossification, abnormal cartilage formation, growth plate dysplasia, osteochondroma formation, and early arthropathy.
View Article and Find Full Text PDFCureus
May 2023
Pathology and Laboratory Medicine, Interbalkan Medical Center, Thessaloniki, GRC.
Solitary extraskeletal osteochondromas are rare benign lesions usually located close to a joint and are characterized by the absence of continuity with the adjacent bone. They are usually found in the hand and feet and are extremely rarely reported in the growing skeleton. In this paper, we describe a four-year-old boy who presented with a solitary calcified tumor in the posterior part of his ankle.
View Article and Find Full Text PDFJ Korean Soc Radiol
September 2022
Extraskeletal osteochondroma, a variant of chondroma, typically arises in the para-articular location of hands and feet. It is a rare disease and is particularly uncommon when joint components are not involved or localized away from joints. Herein, we report a case of extraskeletal osteochondroma in the posterior neck of a 66-year-old female.
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