Cases reported "Bone Cysts"

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11/54. Ultrasound-guided aspiration of posterior cruciate ligament ganglion cysts.

    Intra-articular ganglion cysts of the knee joint are rare. Percutaneous aspiration of ganglion cysts of the knee, which has both diagnostic and therapeutic value, has been described, but usually under guidance by computed tomography (CT). We describe ultrasound-guided aspiration of posterior cruciate ligament cysts in two patients.
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12/54. Intraosseous ganglion in the first metacarpal bone.

    Intraosseous ganglia occur most frequently in the long bones of the lower limbs, particularly in the medial malleolus of the tibia. They usually appear as radiographically well circumscribed juxta-articular cystic lesions, containing myxoid fibrous tissue histologically. Intraosseous ganglia in the hand are very rare. Most reported cases have involved the carpal bones, in particular the lunate and scaphoid. To our knowledge, the present case is the third report of an intraosseous ganglion appearing in the first metacarpal bone; it arose in a patient who had been on dialysis for 25 years, mimicking amyloidosis of bone.
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13/54. Bilateral symmetrical cysts in the upper tibiae in a skeletally mature patient: might they be simple bone cysts?

    A 55-year-old Japanese woman presented with right knee pain of 1-month duration. Radiological studies revealed bilateral mild osteoarthritic changes in the medial knee joint compartment and symmetrical cysts in the upper tibial metaphyses, extending to the epiphyses. Intraosseous ganglion was considered the most probable diagnosis. However, intraoperatively, serous fluid-filled cavities were recognized; these were curetted and filled with hydroxyapatite granules. Histopathological examination of the cyst wall revealed thin fibrous tissue formed of collagen fibers without a lining cell layer, with scattered lymphocytes, histiocytes, irregular masses of fibrin-like material, and periosteal osteocartilagenous callus formation; a picture compatible with simple bone cysts. Bilateral symmetrical cysts of the upper tibial metaphyses extending to the epiphyses are extremely rare. A literature review revealed that the age incidence, and bony locations of multiple and epiphyseal simple bone cysts are atypical in relation to the classic metaphyseal simple bone cysts. Also, multiple and epiphyseal simple bone cysts have a better prognosis than the classic metaphyseal ones. Four clinicoanatomic varieties of simple bone cysts are recognized; classic metaphyseal, nontubular, epiphyseal, and multiple.
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14/54. Imaging demonstration of fistulous gas communication between joint and ganglion of medial malleolus.

    We report an unusual demonstration of a fistulous gas communication between the ankle joint and ganglion of the medial malleolus. The imaging findings support the mechanical hypothesis for the genesis of intraosseous ganglion cysts.
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15/54. Intraosseous ganglion of the lunate.

    Intraosseous ganglia are occasionally found affecting the carpal bones of the hand and should be considered in the differential diagnosis of chronic wrist pain. They have characteristic radiographic findings of a cyst with a thin sclerotic rim. This case report illustrates an unusual presentation of a cyst in the lunate with successful treatment. standard of care includes curettage and bone grafting with minimal recurrence reported.
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16/54. Treatment of a large intraosseous talar ganglion by means of hindfoot endoscopy.

    We report on 2 patients with a large intraosseous ganglion of the talus who were treated by means of a 2-portal endoscopic approach of the hindfoot with the patient in the prone position. By means of this approach, it is possible to visualize, debride, and graft a large intraosseous talar lesion. In both patients, the lesions were treated successfully, with no recurrence at follow up.
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17/54. Periosteal ganglion in a child.

    A case of periosteal ganglion in a 10-year-old boy is reported. The diagnosis of periosteal ganglion was made on roentgenographic and MR appearance and histologic evidence. The patient was successfully treated by excision. The follow-up examination showed no recurrence. Periosteal ganglia must be considered a cause of expanding cortical erosions. This lesion may mimic other peripheral expanding lesions.
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18/54. Intraosseous ganglion of the lunate: a case report.

    An intraosseous ganglion of the lunate treated operatively, is reported. The patient suffered 2 years of pain in the left wrist and a cystic lesion in the lunate. curettage and bone grafting resulted in complete relief of pain.
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19/54. Subperiosteal ganglion associated with Paget's disease of bone.

    Tumoral lesions related to Paget's disease may be classified as malignant, benign or pseudotumoral. While sarcomatous degeneration is the most feared complication, awareness of benign and pseudotumoral lesions is essential for assisting in accurate histological interpretation of the biopsy sample, which may avoid unnecessary repeat biopsies. We present the first case of a juxta-articular subperiosteal ganglion associated with Paget's disease, with classic imaging characteristics, especially on CT examination. The well-defined soft tissue mass at the medial aspect of the obturator rim, adjacent to a small fracture in pagetic quadrilateral plate, showed an ossified rim and internal gas lucencies, these being the hallmarks of a juxta-articular subperiosteal ganglion. On MRI, the lesion was of intermediate signal intensity on T1-weighted sequences, increased signal intensity on T2-weighted sequences, with rim enhancement after gadolinium contrast injection and preservation of fatty marrow signal of the underlying pagetic bone. Identification of the entity avoided an unnecessary biopsy or surgical intervention.
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20/54. carpal tunnel syndrome caused by an intraosseous ganglion of the capitate.

    Intraosseous ganglions often arise in the foot and ankle but are less common within the carpal bones. We present a case of an intraosseous ganglion of the capitate bone associated with compression of the median nerve that was seen on plain radiographs and magnetic resonance images.
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