Cases reported "Cysts"

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1/67. arachnoid cyst of the middle fossa with paradoxical changes of the bony structures.

    Two patients with an arachnoid cyst of the middle fossa showed paradoxical changes of the adjoining bony structures of the skull. There was a diminution of the middle fossa and hyperplasia of the sphenoid sinus (pneumosinus dilatans) as well as a marked bulging of the squamous part of the temporal bone. In one case in which scinticisternography was performed, communication between the cyst and the subarachnoidal space was proven as well as an extremely slow cerebrospinal fluid circulation in the cyst. The pathogenesis of the cyst is discussed, based upon the structural changes of the skull, the angiographic findings and the locally disturbed cerebrospinal fluid circulation. The primary disturbance seems to be a temporal lobe agenesis.
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ranking = 1
keywords = skull
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2/67. Coronal computed tomography: indications and accuracy.

    The application of wide aperture scanners to neuroradiology permits improved anatomic definition and localization of intracranial and intraorbital lesions. Coronal scans are most useful in demonstrating lesions of the skull base and apex, distinguishing between infra- and supratentorial lesions, and in determining if a lesion is intra- or extraaxial. Limitations of coronal scans include discomfort in positioning, high spatial frequency artifacts, and additional radiation exposure.
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ranking = 0.5
keywords = skull
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3/67. Lumbosacral pain in an athlete.

    This report presents a case of a stress fracture in the sacrum. The diagnosis of a stress fracture in the sacrum is an uncommon localization and has been reported infrequently in the English literature. association of this type of stress fracture with a pneumatocyst has not previously been reported.
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ranking = 2.3808938958144
keywords = fracture
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4/67. Pseudocyst formation after intertrochanteric fracture fixation: a case report.

    We describe a 62-year-old woman who developed two pseudocysts, 25 x 15 cm and 20 x 12 cm, in the left proximal thigh as a complication 19 years after internal fixation of an intertrochanteric fracture. She received a 135 degrees dynamic hip screw and side plate in May 1979. She continued to live at home without major discomfort until May 1997. Two huge pseudocysts were noted in the left proximal thigh without trauma history. angiography was normal. Computerized tomography scan revealed two voluminous cystic lesions without septa in the left proximal thigh, with accumulated fluid. During surgery, two huge cysts were found in the left proximal thigh, and their orifices were found slightly proximal to the curvature of the side plate. The pathology showed that the cysts consisted of a nonepithelialized wall of granulation tissue compatible with a pseudocyst. The patient had no further problems 2 years after surgery. We found no reports in the literature of this rare complication. The development of the pseudocysts may have been the result of chronic low-grade trauma due to irritation between the soft tissue and the implant. Orthopedic surgeons should be aware of the possible development of this rare complication following internal fixation of an intertrochanteric fracture.
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ranking = 4.7617877916289
keywords = fracture
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5/67. Visualization of nonvascular cranial tumor in cerebral flow study: case report.

    Unusual results were obtained from a cerebral blood flow study and a brain scan performed on a patient with an uncommon, nonvascular scalp tumor eventually identified as a proliferating trichilemmal cyst with acanthosis. The tumor accumulated the radionuclide during the early phase of the cerebral flow study, and the increased radioactivity was persistent, being prominently observable in a scan made 3 min and 2 hr after the radionuclide injection. This unusual, positive finding in a cerebral blood flow study of a nonvascular tumor was thought to be a consequence of the higher counting efficiency resulting from the lack of shielding by the skull and from the larger volume of the tumor tissue.
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ranking = 0.5
keywords = skull
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6/67. Hemorrhagic cyst following remote alloplastic implantation for orbital floor fracture repair.

    Hemorrhagic cyst formation may occur within months or years following repair of orbital fractures with alloplastic materials. patients present with a sensation of pressure in the involved orbit, double vision, and globe displacement. Evaluation must rule out infectious, inflammatory, and vascular etiologies. Computerized tomography scans reveal a soft tissue density surrounding the alloplastic implant. drainage of the cyst and fibrous capsule, with excision of the capsule and removal of the alloplastic implant, is curative. This article presents three clinical cases, highlighting the evaluation and management of this postsurgical development. Use of the protocol described resulted in complete resolution of all clinical symptoms, and the CT scans were normal. As these materials will continue to be utilized, surgeons should be aware of this potential delayed complication and its management.
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ranking = 3.9681564930241
keywords = fracture
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7/67. The spectrum of growing skull fracture in children.

    The genesis and complications of the growing skull fracture in children is discussed. Four patients are presented to illustrate the common and uncommon features of growing skull fractures. The need for complete radiological evaluation as well as the timing of follow-up examinations is stressed.
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ranking = 385.062722181
keywords = skull fracture, fracture, skull
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8/67. Orbital porencephalic cyst following penetrating orbitocranial trauma.

    In a 10-year-old boy an orbitocranial penetrating wound produced by an umbrella tip caused an orbital roof bone fragment to penetrate up to the anterior part of the third ventricle behind the left foramen of Monro. Hemorrhages and encephalomalacia developed along the trajectory of the fragment and subsequently a porencephalic cyst was formed at this site. Six months after the trauma, increased pressure developed in the left ventricular system due to obstructive hydrocephalus and consequently the porencephalic cyst herniated into the orbit through the orbital roof fracture, producing intermittent diplopia, left exophthalmos, and palpebral swelling. A ventriculo-peritoneal shunt led to shrinkage of the orbital cyst content and resolution of the symptoms.
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ranking = 0.79363129860481
keywords = fracture
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9/67. Proboscis lateralis with associated orbital cyst: detailed MR and CT imaging and correlative embryopathy.

    Proboscis lateralis is a rare craniofacial malformation. We present a case in a 1-week-old male infant, describe the clinical and imaging findings, and discuss the pertinent embryology. MR and CT proved to be complementary: CT provided anatomic detail in bone, defined the nasal cavity, and aided in determining the relationship of the proboscis and orbit; MR clarified the relationship of the proboscis to the orbit and skull base, and the relationships of normal brain to the dysplastic ethmoid centers.
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ranking = 0.5
keywords = skull
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10/67. cerebrospinal fluid pseudocyst of the breast.

    A 39 year old lady presented with a lump in her right breast. She was known to have had a ventriculo-peritoneal shunt inserted for childhood hydrocephalus. mammography revealed a calcified, fractured shunt with an associated soft tissue swelling which resolved following shunt removal. Shunt fracture secondary to calcification is extremely rare, and presentation as a breast lump has not been previously described. This case identifies a rare cause of breast lumps and highlights the importance of complete triple assessment in all patients presenting with a breast lump.
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ranking = 1.5872625972096
keywords = fracture
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