Cases reported "Synovial Cyst"

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1/41. Mucoid cystic degeneration of the cruciate ligament.

    A 35-year-old man was seen with pain in the back of the knee. MRI showed a mass in the anterior cruciate ligament. biopsy indicated mucoid degeneration. Arthroscopic resection of the ligament was carried out, with relief of symptoms.
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keywords = back
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2/41. Craniocervical junction synovial cyst associated with atlanto-axial dislocation--case report.

    A 51-year-old female presented with a rare case of synovial cyst at the cruciate ligament of the odontoid process associated with atlanto-axial dislocation, manifesting as a history of headache and numbness in her left extremities for 5 months, and progressive motor weakness of her left leg. neuroimaging studies revealed a small cystic lesion behind the dens, which severely compressed the upper cervical cord, and atlanto-axial dislocation. The cyst was successfully removed via the transcondylar approach. C-1 laminectomy and foramen magnum decompression were also performed. Posterior craniocervical fusion was carried out to stabilize the atlanto-axial dislocation. The cyst contained mucinous material. Histological examination detected synovial cells lining the fibrocartilaginous capsule. Synovial cysts of this region do not have typical symptoms or characteristic radiographic features. Careful preoperative evaluation of the symptoms and a less invasive strategy for removal of the cyst are recommended.
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ranking = 0.0450520025175
keywords = upper
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3/41. Recurrent synovial cyst of deep soft tissues. A case report.

    BACKGROUND: Cystic lesions of deep soft tissues are rare and usually are composed of a mesenchymal tumor undergoing necrosis or regressive changes. Benign cysts arising de novo are even more rare and may show features of different morphology, potentially leading to an inexact diagnosis. CASE: A 68-year-old male presented with a deep, firm mass in the upper part of the back from which a dense liquid was aspirated, with an inconclusive diagnosis. A second fine needle aspiration was performed, and the lesion was surgically biopsied. Immunohistochemical studies were also inconclusive, while ultrastructural studies suggested an origin in the synovia of the scapular bursa. CONCLUSION: The cytologic picture was suspicious for malignancy due to the presence of numerous pseudopapillary structures, reminding us of a secondary deposit from a renal or thyroid primary or mesenchymal neoplasm. However, the bland nuclear aspect suggested the benignity of the lesion, and the electron microscopic features confirmed the synovial origin.
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ranking = 1.0450520025175
keywords = back, upper
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4/41. Lumbar spinal synovial cyst presenting with neurological deficit. A case report and review of the literature.

    A spinal synovial cyst is a rare condition. We reported a case of lumbar spinal synovial cyst presenting neurological deficit. A 78-year-old woman was admitted to our hospital with the low back pain radiating to the left buttock. A myelography with computed tomography and magnetic resonance imaging revealed an extradural cystic lesion at the L5 and S1 level. At the time of surgery, a standard posterior approach was used to expose the posterior elements from L5 to S1. An en bloc laminectomy and total removal of the cyst was performed at the L5 to S1 level. The postoperative recovery was uneventful except for a slight pain in the left leg which persisted for some time.
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ranking = 13.93466371522
keywords = back pain, back
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5/41. Symptomatic cervical synovial cyst associated with an os odontoideum diagnosed by magnetic resonance imaging: case report and review of the literature.

    STUDY DESIGN: The first case of a synovial cyst of the upper cervical spine associated with os odontoideum diagnosed by magnetic resonance imaging is presented. OBJECTIVES: To evaluate distinct magnetic resonance imaging findings of a cervical synovial cyst located anterior to the cord and discuss its association with os odontoideum. These findings may guide further investigations. BACKGROUND: Synovial cysts of the spine are uncommon findings. They occur mostly dorsolaterally and with greatest frequency in the lumbar spine and are rarely symptomatic. No association with os odontoideum has been reported before. methods: A single subject with symptoms of deterioration in his hand functions was examined by a 2. 0-T magnetic resonance imager. RESULTS: magnetic resonance imaging of the cervical spine showed an os odontoideum connected to the body of C2 by a synovial joint that had a cystic extension posteriorly compressing the cord. CONCLUSION: Synovial cysts should be considered in the differential diagnosis of an extradural mass of the upper cervical spine. magnetic resonance imaging should be the choice in the investigation of such cases.
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ranking = 0.090104005035001
keywords = upper
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6/41. Lumbar intraspinal synovial cyst containing gas as a cause for low-back pain.

    OBJECTIVE: To discuss intraspinal synovial cysts caused by degenerative changes involving the posterior articular facets in the lumbar spine and to provide differential considerations for patients with low-back pain. Clinical Features: A 70-year-old man with low-back and gluteal pain demonstrating eventual progression of radiating pain into the left thigh, calf, ankle, and foot over a 5-month period. Radiographs of the lumbar spine revealed mild degenerative disk disease at L5-S1 with associated vacuum phenomena of the L5 disk. Degenerative osteophytes were present at L3, L4, and L5. Moderate posterior joint arthrosis was evident at L4-L5 and L5-S1. Computed tomography and magnetic resonance imaging studies revealed an intraspinal gas-containing synovial cyst at the left lateral aspect of the central canal at the level of the left L4-L5 facet articulation. Intervention and Outcome: The patient underwent surgical excision of the synovial cyst with remission of symptoms. CONCLUSION: Gas-containing intraspinal synovial cysts can be a significant finding and a causative factor in patients with low-back pain and pain radiating into the lower extremities. Both computed tomography and magnetic resonance imaging are important in defining intraspinal synovial cysts as a cause of back pain in patients whose low-back pain does not respond to chiropractic care.
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ranking = 112.47730972176
keywords = back pain, back
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7/41. Acute traumatic myelopathy secondary to a thoracic cyst in a professional football player.

    STUDY DESIGN: Case report of acute traumatic myelopathy secondary to thoracic synovial cyst in a professional football player. OBJECTIVE: To emphasize examination for myelopathy and describe the radiographic and magnetic resonance findings of a rare source of traumatic myelopathy. BACKGROUND: magnetic resonance imaging is the best initial evaluation for myelopathy in a traumatic setting. Heightened awareness during evaluation of a player involved in a traumatic incident allowed the diagnosis of potential cord damage and paralysis. methods: A subject with symptoms resulting from a direct blow to the back was evaluated for myelopathy, with diagnosis assisted by magnetic resonance imaging used to pinpoint the source of the disorder. RESULTS: The diagnosis allowed a surgical excision of the traumatic synovial cyst and full recovery of the injured football player. CONCLUSIONS: awareness during examination for myelopathy in an acutely injured athlete is imperative to prompt the clinician to order the proper diagnostic studies and thereby embark on a surgical correction of the problem.
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ranking = 1
keywords = back
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8/41. Unusual case of lumbar synovial cyst.

    Synovial cysts are extradural degenerative lesions associated with symptoms of lower back pain and radiculopathy. To our knowledge, all the reported cases of synovial cysts in literature were posterolateral in location (1-4). This case report describes the previously unreported midline location of the synovial cyst in the spinal canal and to increase the level of awareness of diagnosing these lesions in a central location, especially in light of the evaluation of lumbar radiculopathy.
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ranking = 13.93466371522
keywords = back pain, back
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9/41. synovial cyst of lumbar spine presenting as disc disease: a case report and review of literature.

    Synovial cysts most commonly involve the joints of the extremities. These cysts are rarely found in the spinal canal or the vertebral facet joints. However, if manifested as such, they can pose serious diagnostic and therapeutic problems due to the presentation, which most often resembles nerve root or spinal cord compression. Acute low back pain and radiculopathy are often attributed to a herniated nucleus pulposus. This paper presents a case of synovial cyst in a 62-year-old woman with a 2-year history of refractory low back pain with distal radiation. A facet joint cyst was encountered upon neuroimaging, resulting in excision of the cyst. In this report, we discuss the differential diagnosis of synovial cysts, the role of computed tomography and magnetic resonance imaging in the diagnosis, and treatment options for this uncommon entity.
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ranking = 27.86932743044
keywords = back pain, back
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10/41. Unusual facet cyst containing struvite and hydroxyapatite.

    This case report describes a patient with severe back pain and radiculopathy. She was found to have a facet cyst within the lumbar spine that appeared to contain calcium on MRI and CT. Upon aspiration the cyst was found to contain calcium ammonium phosphate (struvite) and calcium phosphate (hydroxyapatite). ammonia production in the presence of urease-producing bacteria is responsible for the production of struvite in the human body. We postulate that there was a prior infection of the facet with urease-producing bacteria, thus accounting for the production of the struvite within the facet cyst.
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ranking = 13.93466371522
keywords = back pain, back
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