Parosteal Osteosarcoma of the Distal Radius Mimicking an Osteochondroma—A Diagnostic Misadventure

Sanghavi, Sahil; Wahegaonkar, Abhijeet L.; Panchwagh, Yogesh; Kharat, Amit

doi:10.1016/j.jhsa.2017.07.010

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…Parosteal osteosarcomas arise from the periosteum of metaphyseal long bones, most commonly in the distal femur, proximal tibia, and proximal humerus [1,2]. However, there have been reports of parosteal osteosarcomas arising from various locations, such as the distal radius, talus, cranium, mandible, ribs, clavicle, and tarsal bones [3,4,8].…”

Section: Discussionmentioning

confidence: 99%

Pediatric Parosteal Osteosarcoma of the Distal Radius with Destruction of the Adjacent Ulna: A Case Report

Perloff,

Park,

Panganiban

et al. 2023

Preprint

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Introduction:Parosteal osteosarcomas are low-grade bony malignancies that are treated primarily with surgical resection and reconstruction. We report a unique case of a pediatric patient who presented with a parosteal osteosarcoma of the distal radius with local invasion into the ulna. Likely due to their slow-growing nonaggressive nature, parosteal osteosarcomas have not been previously described to invade adjacent bony structures through direct contact. Our patient presented in a significantly delayed manner due to social circumstances, allowing us to inadvertently describe this novel behavior. We review this rare case and describe the current understanding of this tumor. Case presentation:Our patient is a 13-year-old male who presented with a parosteal osteosarcoma of his distal radius. He presented with a palpable wrist mass and wrist stiffness. He presented in a delayed manner with advanced local disease due to social factors. Imaging revealed an osseous radial mass that effaced the ulna and likely stunted its growth. The patient ultimately underwent complex resection and allograft reconstruction of both his distal radius and ulna. Intraoperative pathology confirmed tumor pathology with erosion of the adjacent ulna. Allograft reconstruction of the radius and ulna was performed utilizing patient-specific custom cutting guides. At the 6-month postoperative visit, the patient had no recurrence of the mass, minimal pain, and had almost regained range of motion of the extremities. Clinical radiographs at the 6-month postoperative visit demonstrated allograft incorporation. Conclusions: We present a previously unreported case of pediatric parosteal osteosarcoma of the distal radius with erosion of the adjacent ulna through direct contact. We describe the challenges in and emphasize the importance of arriving at a definitive diagnosis in a timely manner for the proper treatment of this malignancy.

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Section: Discussionmentioning

confidence: 99%

Pediatric Parosteal Osteosarcoma of the Distal Radius with Destruction of the Adjacent Ulna: A Case Report

Perloff,

Park,

Panganiban

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…Parosteal osteoma is a very rare entity, characterised by uniformly dense parosteal bone formation separated from the medullary cavity by cortex which may be normal or thickened [8]. Osteochondroma is usually distinguishable by demonstrating both medullary continuity with the central portion of the lesion and a cartilage cap [9]. Malignancies with mineralised extra-osseous components such as conventional osteosarcoma and chondrosarcoma should also be considered, given their relative propensity for the long bones [10].…”

Section: Discussionmentioning

confidence: 99%