1/47. Evanescent exostosis. A new case.Much has been written about the natural history of osteochondromas, but there are only a few reports in the literature reflecting the spontaneous disappearance of this lesion. For that reason, we report an additional case which makes the total number of reported cases eleven, and also includes a review of the literature.- - - - - - - - - - ranking = 1keywords = exostosis (Clic here for more details about this article) |
2/47. Osteolipoma of the hand: a case report.A 61-year-old, healthy woman presented with a six-month history of a mass on the radial volar aspect of her dominant right hand. The patient had a history of trauma to the hand six years previously. Radiographs showed a bony lesion in the index metacarpal shaft and the MRI showed a bony lesion and soft tissue mass suggestive of a parosteal lipoma. Surgical excision of the lesion revealed a lipoma overlying a bony exostosis or osteolipoma of the hand. Post-operatively, the patient's symptoms resolved and she had no recurrence of the tumor.- - - - - - - - - - ranking = 0.25keywords = exostosis (Clic here for more details about this article) |
3/47. Isolated musculocutaneous neuropathy caused by a proximal humeral exostosis.We report an isolated musculocutaneous neuropathy caused by a proximal humeral osteochondroma that became symptomatic after the patient played recreational basketball. Lesion resection resulted in complete deficit resolution. Mass lesions involving the musculocutaneous nerve should be considered in patients with atraumatic, isolated musculocutaneous neuropathies that are recurrent or fail to recover, even in the setting of strenuous exercise.- - - - - - - - - - ranking = 1keywords = exostosis (Clic here for more details about this article) |
4/47. Scapular osteochondroma with reactive bursitis presenting as a chest wall tumour.A 32-year-old male presented with a painful, rapidly enlarging chest wall mass. A malignant chest wall neoplasm was suspected. A CT scan was performed which showed a mass extending from under the scapular and an exostosis arising from the anterior surface of the scapular. The mass and exostosis were resected resulting in complete resolution of symptoms. Histological examination showed the mass to be a reactive bursa, with no evidence of neoplasia.- - - - - - - - - - ranking = 0.5keywords = exostosis (Clic here for more details about this article) |
5/47. osteochondroma of the tibia and popliteal artery stenosis.In our department, an osteochondroma of the tibia in a young girl with intermittent claudication of the right leg was treated. Many instrumental examinations were performed in order to exclude an arterial disorder. As the patient shows signs of arterial compression, an operative procedure to remove the exostosis was performed.- - - - - - - - - - ranking = 0.25keywords = exostosis (Clic here for more details about this article) |
6/47. Case report of secondary chondrosarcoma showing spontaneous regression after frequent recurrences.We report a case of secondary chondrosarcoma arising in the ilium showing spontaneous regression after frequent local tumor recurrences followed by multiple surgeries of marginal or intralesional excision. The patient was a 16-year-old boy who had been diagnosed as having multiple exostosis from 9 years of age. He experienced an increasing abdominal tumor mass that formed a huge tumor. Although marginal resection of the tumor was attempted, intraperitoneal dissemination was caused by rupture of the tumor capsule and the peritoneum, as a result of severe tumor adhesion to the peritoneum. During the 5 years after the initial operation, local recurrences occurred seven times in various areas of the intra- or retro-peritoneum and marginal or intralesional excision was performed every time for a total of 14 tumors. However, since the seventh operation, the patient has had no evidence of recurrence or metastasis of the disease for more than 10 years. Therefore, we considered that the cancer might have spontaneously regressed.- - - - - - - - - - ranking = 0.25keywords = exostosis (Clic here for more details about this article) |
7/47. chondrosarcoma of the foot. A case report and review of the literature.chondrosarcoma of the foot is a very unusual entity. A case arising from a solitary osteocartilagenous exostosis is presented and the literature is reviewed and discussed.- - - - - - - - - - ranking = 0.25keywords = exostosis (Clic here for more details about this article) |
8/47. The natural history of disappearing bone tumours and tumour-like conditions.We describe 27 cases of bone tumours or tumour-like lesions where there was spontaneous regression. The follow-up period was 2.8-16.7 years (average, 7.0 years). Fourteen of these cases were no longer visible on plain radiographs. Histological diagnosis included exostosis, eosinophilic granuloma, fibrous dysplasia, fibrous cortical defect, non-ossifying fibroma, osteoid osteoma and bone island. Most cases began to reduce in adolescence or earlier, although sclerotic type lesions showed their regression in older patients. All lesions thought to be eosinophilic granuloma began to regress after periods of less than 3 months, while the duration of the other lesions showed wide variation (1-74 months). As resolution of the lesions took between 2 and 79 months (mean, 25.0 /- 20.3 months) we consider that the most likely mechanism was recovery of normal skeletal growth control. In exostosis with fracture, alteration of vascular supply may contribute to growth arrest, but not to subsequent remodelling stage. In inflammatory-related lesions such as eosinophilic granuloma, cessation of inflammation may be the mechanism of growth arrest, whilst temporary inflammation may stimulate osteogenic cells engaged in remodeling. In the sclerotic type, growth arrest is a less probable mechanism. necrosis within the tumour and/or local changes in hormonal control, plus remodelling of the sclerotic area takes longer. knowledge of the potential for spontaneous resolution may help in management of these tumour and tumour-like lesions of bone.- - - - - - - - - - ranking = 0.5keywords = exostosis (Clic here for more details about this article) |
9/47. A man with hereditary exostoses and high-grade non-Hodgkin's lymphoma of the bone.Multiple cartilaginous exostoses (MCE) is an autosomal dominant disorder that can lead to malignant transformation from exostoses to a secondary chondrosarcoma. We present a case report of a 52-year-old man with MCE who had a palpable mass at the left shoulder. At the site of the left proximal humerus, a cartilaginous exostosis was localized, suggesting that the tumor developed by a malignant transformation of an exostosis into a secondary chondrosarcoma. Interestingly, a biopsy showed a diffuse large B-cell lymphoma with Burkitt-like features. To our knowledge, the association of high-grade lymphoma and hereditary exostoses has not been described previously. This case demonstrates that a malignant tumor at the location of a cartilaginous exostosis is not necessarily a chondrosarcoma and that a biopsy is an essential part of the diagnostic work-up.- - - - - - - - - - ranking = 0.75keywords = exostosis (Clic here for more details about this article) |
10/47. Novel translocation (9;12)(q22;q24) in secondary chondrosarcoma arising from hereditary multiple exostosis.We report a new translocation in a patient with a history of hereditary multiple exostosis (HME) who developed a recurrent grade I chondrosarcoma involving the sacrum and retroperitoneum. Karyotypic analysis of the tumor revealed a sole chromosome abnormality t(9;12)(q22;q24.3). To our knowledge, this translocation has not been previously identified in either chondrosarcoma, HME, or related tumor types. Our novel translocation may be related to the sarcomatous degeneration of the pre-existing exostosis.- - - - - - - - - - ranking = 1.5keywords = exostosis (Clic here for more details about this article) |
| | Next -> |