Cases reported "Chondroblastoma"

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1/11. Chondromyxoid fibroma of bone.

    Chondromyxoid fibroma is a benign, although potentially aggressive tumor, with a cartilage-like matrix, accounting for approximately 1% of all bone tumors. It usually affects the metaphyseal region of long bones of patients in their first or second decade of life. An additional peak of incidence has been observed between 50 and 70 years of age. Three cases are presented here: 10-, 13-, and 52-year-old patients, with lesions in the proximal tibia, the proximal humerus, and the proximal femur, respectively. The literature is reviewed in terms of clinical behavior, diagnostic procedures, prognostic factors, treatment, and outcome. Preferred treatment is complete local excision with tumor-free margins. Intralesional curettage with or without local adjuvants shows a local recurrence rate of approximately 25%. radiation therapy may be useful in nonresectable cases but bears the well documented risk of radiation-induced malignancies.
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keywords = tibia
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2/11. Chondromyxoid fibroma of the fourth metatarsal.

    Chondromyxoid fibroma is a rare benign tumor that is typically found in the metaphyseal ends of long tubular bones, such as the tibia. The authors describe a case of this neoplasm occurring in the foot. Treatment included complete resection with reconstruction using an autogenous fibular bone graft. The surgical technique and the advantages of using a fibular bone graft are discussed.
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keywords = tibia
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3/11. breast metastasis in osteosarcoma.

    A young girl with a history of chondroblastic osteosarcoma of the tibia developed a pulmonary metastasis which was treated by metastasectomy, chemotherapy and lung irradiation. There years later, at the age of 15, she developed a breast mass which was excised and which proved to be a poorly differentiated sarcoma. This was almost certainly a metastasis rather than a radiation-induced second primary tumour, in view of the short interval since radiotherapy. The ultrasonographic features of this lesion are presented here and the differential diagnosis is discussed in this context.
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keywords = tibia
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4/11. chondroblastoma of the talus: a case report.

    chondroblastoma of bone is an uncommon condition that has a predilection for secondary ossification centers, particularly of the humerus, tibia, and femur. Treatment usually involves surgical curettage and autogenous bone graft. This article reports the case of a chondroblastoma affecting the talus of a young man and a minimally invasive surgical approach for the treatment of this lesion. The patient presented with an 18-month history of right ankle pain and swelling. The lesion involved most of the talar body, with 2.5-cm cortical erosion inferiorly at the posterior talocalcaneal facet. A lateral approach was made to the talus and a window was fashioned at the distal end of the sinus tarsi under fluoroscopic guidance to allow access to the lesion. This was curetted and the defect was filled with autogenous bone graft taken from the ipsilateral iliac crest. The patient underwent an uneventful recovery, and was asymptomatic at follow-up 24 months postsurgery. He had 75% movement at the subtalar joint, when compared with the contralateral foot.
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ranking = 1
keywords = tibia
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5/11. Arthroscopic resection of chondroblastoma of the knee.

    We present a case of chondroblastoma of the upper tibia treated by complete arthroscopic excision. The diagnostic difficulties raised by the case are discussed. This method of treatment has not, to our knowledge, been reported in the literature.
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ranking = 1
keywords = tibia
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6/11. chondroblastoma of the upper end of the tibia, invading the attachment of the posterior cruciate ligament.

    A case of chondroblastoma with invasion of the joint via the attachment of the posterior cruciate ligament is reported. The importance of careful interpretation of early radiological signs and the usefulness of conventional tomographic and computerized axial tomographic examination is demonstrated, and a method for reconstruction of the defect using an AO buttress plate and bone chips is presented. There was no sign of recurrence two and a half years postoperatively.
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ranking = 4
keywords = tibia
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7/11. Extremity bone tumors: evaluation by P-31 MR spectroscopy.

    High-resolution P-31 MR spectra were obtained in four patients with bone tumors of their distal extremities. In one case the tumor, a Ewing sarcoma of the tibia, was investigated during clinical remission after radiation therapy and chemotherapy. The other three cases - one low-grade chondrosarcoma of the tibial head, one malignant fibrous histiocytoma of the tibia, and one chondroblastoma of the medial femoral condyle - showed clinically active tumor growth, with corresponding increased metabolism as demonstrated by bone scintigraphy. The spectra of the three active tumors indicated a comparably high adenosine triphosphate content, similar to previously published spectra from animal tumors or human tumors implanted into animals. There were also high resonances of inorganic phosphate and low resonances of phosphocreatine; there were definite peaks in the phosphodiester and phosphomonoester regions, indicating the existence of these metabolites in the tumors. Slight but definite changes in the metabolite content were observed in one tumor after chemotherapy. The spectra of the unaffected leg did not show any well-resolved P-31 signals, which is typical for healthy bone. These are the first P-31 MR spectra of human bone tumors measured in patients to our knowledge.
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ranking = 3
keywords = tibia
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8/11. Multifocal benign chondroblastomas: report of a case.

    Benign chondroblastoma is an unusual solitary bone tumor occurring usually in the second decade in a long bone. The tumor is often sited on epiphyseal cartilages. Very few examples of malignant variants have been documented, although local recurrence of benign tumors is not unusual. We wish to report a patient who developed two chondroblastomas in two distinct anatomical sites (tibia and calcaneus) over the space of seven years, with no clinical or histological features of malignant disease.
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ranking = 1
keywords = tibia
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9/11. Case report 837: Juxtacortical (periosteal) chondromyxoid fibroma of the proximal tibia.

    A case of juxtacortical chondromyxoid fibroma in a 31-year-old man was reported. Proof of the diagnosis was obtained by an open biopsy. The histopathology of chondromyxoid fibroma was discussed at length. The radiographic appearances and the differential diagnosis were also described.
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ranking = 4
keywords = tibia
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10/11. Chondromyxoid fibroma.

    Chondromyxoid fibroma is a rare benign tumor derived from cartilage. The classic site of involvement is usually the metaphyseal ends of the long tubular bones, such as the tibia. The majority of these tumors are seen in the lower extremities during the second and third decades of life. Local recurrence of the tumor in bone is not uncommon, while soft tissue recurrence is less frequent. Most younger patients and those with recurrent tumors tend to have the mucinous type. This case is somewhat classic in nature. The tumor was originally seen in the second decade of life and was of the mucinoid type. Bone grafting was necessary because of the size and location of the tumor.
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ranking = 1
keywords = tibia
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