Cases reported "Lipoma"

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1/133. Cutaneomeningospinal angiomatosis (Cobb syndrome) with tethered cord.

    A newborn presented with a skin-covered lumbar mass with a subcutaneous hemangioma and on a magnetic resonance image (MRI) revealed a tethered spinal cord with a local mass. The mass had signal characteristics compatible with a lipoma. An initial diagnosis of a lipomeningocele with tethered cord was made, and the patient underwent surgical exploration and subtotal resection of the mass. A follow-up MRI revealed that the cord was still tethered, but an additional mass was present. The initial mass with signal characteristics of lipomatous tissue was accompanied by a low-signal mass in the lumbosacral canal, ventral to the cord, and bilateral enlargement of the foramina at the lumbosacral level. Because of a concern for an intraspinal tumor, a second operative intervention was performed. Multiple biopsies of the mass inside the spinal cord, the nerve roots and at the level of the foramina revealed angiomas that had similar pathology in all the specimens. A partial resection of the masses and a release of the tethered cord was performed by sectioning the thickened filum terminale. The diagnosis of Cobb's syndrome was made. The unique association of a tethered cord and the Cobb syndrome is reported here.
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2/133. Neural compressive symptoms appearing during steroid treatment in a patient with intracranial lipoma.

    Intracranial lipoma is a rare condition, and it is usually asymptomatic. We describe a 67 year old woman who developed blurred vision, diplopia, left sided oculomotor palsy, and ipsilateral ptosis during steroid treatment for giant cell arteritis. These symptoms were considered to be associated with aggressive giant cell arteritis, and the steroid dose was raised. Surprisingly, the symptoms increased, and further examination revealed an intracranial lipoma situated in the Meckel's cave. During tapering of the steroids her symptoms gradually improved. This is the first report demonstrating that steroids may induce hypertrophy of the fat tissue in the intracranial lipoma, causing compression of the cranial nerves passing through the cavernous sinus thereby mimicking the ocular symptoms sometimes associated with aggressive giant cell arteritis.
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3/133. Spindle cell lipoma of the breast.

    Spindle cell lesions, which commonly arise in the soft tissues, may present in the breast and be difficult to distinguish from primary mammary spindle cell tumors. We present the case of a 28 year old woman with a 1.5 cm circumscribed spindle cell lipoma lying deep within the tissue of the right breast. Thin, uniform spindle cells were associated with collagen bundles, mature adipocytes and entrapped normal mammary ducts, lobules, vessels and nerves, appearances which simulated an aggressively infiltrating tumor. The spindle cells proved immunoreactive to CD34 and vimentin but non-reactive for cytokeratin, S100, desmin, smooth muscle actin and factor viii. Although surgical resection was incomplete, the patient is alive and without evidence of tumor recurrence 12 months postoperatively. In our case, a conservative approach to management was justified and supported by the patient's subsequent clinical course. This case exemplifies the diagnostic challenge of spindle cell lesions arising in breast tissue and the value of immunoperoxidase stains.
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4/133. cerebellopontine angle lipoma: case report and review of the literature.

    Intracranial lipomas located in the cerebellopontine angle are extremely rare. These tumours are mal-developmental lesions which can cause slowly progressive neurological symptoms. The clinical management of these tumours differs significantly from other lesions in this region. A 27 year old woman presented with a 2-month history of vertigo and a slowly progressive deterioration of hearing in the left ear. Computed tomography (CT) revealed a large low-density mass in the left cerebellopontine angle without any contrast-enhancement. In T1-weighted magnetic resonance imaging (MRI) the lesion was hyper-intense and did not enhance after application of gadolinium. Areas of lower signal intensity inside of the lesion were suggested as incorporated cranial nerves. A left retro-sigmoidal approach in a semi-sitting position was chosen to expose the tumour. After reducing the tumour mass, the tumour was dissected from the cranial nerves which were incorporated into the tumour. The residual tumour was adherent to the brain stem and the encased lower cranial nerves, allowing only a near subtotal resection of the highly vascularized tumour in order to avoid neurological deficits. The histological examination revealed a lipoma. Attempts at complete removal of cerebellopontine angle lipomas usually result in severe neurological deficits. Conservative treatment should therefore be preferred. Limited surgery is indicated if the patients suffer from disabling neurological symptoms and signs e.g., vertigo, nausea, trigeminal neuralgia, facial weakness or facial spasm.
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5/133. Intradural spinal lipoma of the conus medullaris without spinal dysraphism.

    A 42-year-old man suffering from progressive left radicular sensory motor loss (L4 level) underwent neurosurgical repair. neuroimaging (RMI) had led to the diagnosis of schwannoma of the filum terminale with lipomatous component. Histological examination visualized a true mature lipoma associated with numerous bundles of more or less dystrophic nerve fibers. This histological benign tumor raised the problem of the genesis of intradural lipomas of spinal cord.
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6/133. Ulnar neuropathy caused by a lipoma in Guyon's canal--case report.

    A 74-year-old female presented with a 3-month history of compression neuropathy of the right ulnar nerve in Guyon's canal. magnetic resonance imaging and ultrasonography revealed the location of the mass lesion. Surgical exploration discovered a lipoma pressing against both the ulnar nerve and the ulnar artery. The mass was extirpated. The postoperative course was uneventful with good function recovery.
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7/133. Lipofibromatous hamartoma and related peripheral nerve lesions.

    Three unusual cases of a rare, tumor-like condition, lipofibromatous hamartoma, are reported. This lesion is composed of fibrous and fatty tissue that infiltrates peripheral nerves, typically on the volar aspect of the upper extremities of children and young adults. All three patients had a painless soft tissue mass of the wrist and/or hand, which followed nerve distribution, and only one patient had neurologic symptoms due to compression. diagnosis was made by open biopsy and histologic examination.
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8/133. Infantile arachnoid cyst compressing the sacral nerve root associated with spina bifida and lipoma--case report.

    A 2-year-old boy presented with a rare sacral arachnoid cyst manifesting as gait disturbance. neuroimaging revealed an intradural cyst in the sacral nerve root sheath associated with spina bifida occulta and a lipoma at the same level. At surgery, the conus medullaris was situated at the L-1 level and not tethered. The highly pressurized arachnoid cyst had exposed the dural sheath of the left S-2 nerve root and compressed the adjacent nerves. An S-2 nerve root pierced through the cyst. There was no communication between the cyst and spinal arachnoid space. We thought the one-way valve mechanism had contributed to the cyst enlargement and the nerve compression. Radical resection of the cyst was not attempted. A cyst-subarachnoid shunt was placed to release the intracystic pressure. Postoperatively, his gait disturbance improved and no deterioration occurred during the 4-year follow up. Both tethered cord syndrome and sacral arachnoid cyst in the nerve root sheath should be considered in pediatric progressive gait disturbance. Cyst-subarachnoid shunt is an alternative method to cyst resection or fenestration to achieve neurological improvement.
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9/133. Fibrolipoma of the median nerve: a case report and review of the literature.

    A 38 year-old patient presented with right median nerve distribution paresthesias. Electrodiagnostic studies confirmed severe carpal tunnel syndrome. A palmar mass prompted a magnetic resonance imaging scan, which suggested a fibrolipoma of the median nerve. Carpal tunnel release resulted in resolution of preoperative pain and paresthesias. We review the literature dealing with this primary nerve tumor.
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10/133. lipomatosis of the parotid gland in a child.

    lipomatosis of the parotid gland is a very rare tumour and its discovery in a child is exceptional. These tumours are not generally considered in the preoperative differential diagnosis of parotid region neoplasms because of their rarity. The treatment of choice is surgical excision, with a superficial or total parotidectomy, preserving the facial nerve. Long-term follow-up is advised due to possible microscopic infiltration. A case of lipomatosis of the parotid gland in a 4-month-old child is reported.
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