Two cases of flexor digitorum profundus avulsion due to enchondroma of the distal phalanx. (57/97)

Avulsion of the flexor digitorum profundus tendon with fracture of the distal phalanx is rare. Moreover, enchondroma is less frequent in the distal phalanx. We report two unusual cases of avulsion of the flexor digitorum profundus tendon at its insertion in combination with pathological fracture of the distal phalanx due to enchondroma. Curettage and bone grafting were performed for an enchondroma of the distal phalanx. The flexor digitorum profundus tendon and the avulsed bone fragment were reinserted through the bone graft into the distal phalanx using the pull-out technique. With Strickland's criteria, the clinical results were evaluated as excellent in both cases. At the final follow-up examinations, there were no symptoms and no recurrence of the bone tumor. In the present cases, three-dimensional computed tomography imaging was useful for diagnosing the flexor tendon avulsion, determining the preoperative identification the location of a ruptured tendon stump, and planning the operation to minimize the surgical wound. The recommended treatment for avulsion of the FDP tendon due to enchondroma is curettage, bone grafting of the resultant cavity, and reattachment of the tendon to ensure sufficient structural strength to permit secure fixation and early mobilization and, especially, to prevent flexion contracture of the finger because the stump of the flexor digitorum profundus is buried in the cavity of the distal phalanx.  (+info)

Chondroma of falx: case report of a rare condition. (58/97)

Chondroma is a benign tumor which mostly occurs in extremities but also sometimes in brain. Most intracranial chondromas arise from skull base, but chondroma of falx origin is a rare circumstance. Indeed, the intracranial chondromas rise from falx is mostly in relation with syndromic disorders such as Mafucci's syndrome or Ollier's syndrome. Here, we reported a rare case of falxian intracranial chondroma in a young man who has normal physical examination and no signs of any syndromic disorder. The goal of this paper was to raise awareness about chondromas and suggest that chondroma be ruled out in any patient with masses arising from falx.  (+info)

Cutaneous mixed tumor with extensive chondroid metaplasia: a potential mimic of cutaneous chondroma. (59/97)

True cutaneous chondromas are extremely rare. Previously they have reportedly been confused with soft tissue chondromas and cartilaginous developmental anomalies. Monophasic mixed tumor could potentially also be mistakenly diagnosed as a true cutaneous chondroma. We report a cutaneous mixed tumor with massive chondroid metaplasia that mimicked a true cutaneous chondroma. We also propose that cutaneous mixed tumor with chondroid metaplasia may better explain the presence of primary cartilaginous tumors in the skin and true cutaneous chondroma may not be a real entity.  (+info)

Multiple metastasis-like bone lesions in scintigraphic imaging. (60/97)

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Fibrosarcomata and malignant fibrous histiocytomata arising in relation to enchondromata. (61/97)

Six cases are reported in which a fibrosarcoma or malignant fibrous histiocytoma developed in relation to an enchondroma in a long bone. Four of the tumours were fibrosarcomata, and two were malignant fibrous histiocytomata. Five of the six cases were in the distal femur, which is a common site for old calcified enchondromata or "cartilage rests". The age of the patients was between fifty-six and eighty-six with a mean of seventy. Four were women, Five died less than one year after presentation. The fibrosarcomata and malignant fibrous histiocytomata do not appear to have arisen directly from the tumour cartilage but from the dense fibrous tissue surrounding necrotic areas in the enchondromata by a process analogous to that responsible for the development of fibrosarcomata in bone infarcts and chronic osteomyelitis. The possibility that some "dedifferentiated" chondrosarcomata are forms of collision tumour is discussed.  (+info)

Periosteal chondroma of the ischium; an unusual location. (62/97)

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Intracranial chondroma: a rare entity. (63/97)

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Expression of aurora kinase A and B in chondrosarcoma and its relationship with the prognosis. (64/97)

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