Sami I. Nassar's research while affiliated with American University of Beirut and other places

Publications (4)

Article
A 45-year-old man presented with progressive numbness of lower extremities and unsteady gait. Magnetic resonance imaging of the dorsal spine demonstrated multiple hyperintense inactive vertebral hemangiomas on T-1 weighted images. There was an active hemangioma involving D7 vertebral body and neural arch with epidural extension and spinal cord comp...
Article
An abscess involving an already present brain tumor is a rare occurrence. Two cases of an abscess superimposed on a brain tumor are presented and discussed. The medical literature is reviewed, and all reported cases are compared to our own. Only 15 cases of an abscess associated with a brain tumor were found in the literature, to which we add 2 of...
Article
Advanced knowledge about cutaneous vascularity has enabled the development of axial flaps such as fasciocutaneous, septocutaneous, and musculocutaneous flaps. It has also laid the foundation for microsurgical free flaps. The newly emerging concept of angiosomes sheds yet more light on the complexity and multiplicity of peripheral blood supply. We d...
Article
Epidermoids of the brain are rare tumors. Their fourth ventricle localization is about the rarest localization. No series of such tumors has been reported. Their manifestations and management are therefore not well understood. Four epidermoid tumors of the fourth ventricle were collected over a period of 39 years from the neurosurgical units of the...

Citations

... [7,8] Their growth rate is linear to that of the epidermis. [9] They become symptomatic, usually in the second to fourth decades of life. [5,6,10] Tumor grows due to the accumulation of desquamated cells and their breakdown products such as keratin and cholesterol. ...
... There have been few reports on use of the trapezius flap with a segment of the LDM. In 1996, Atiyeh et al. 11 described using an extended vertical trapezius flap including a segment of the LDM with the underlying paraspinal fascia to close an infected suboccipital dural defect in one patient. Chen et al. 12 used an extended vertical LTMF with the LDM to reconstruct defects in the skull base in three patients. ...
... The most common presenting symptom seen was headache, which was present in six cases including our own [8,[11][12][13][14]. Hemiparesis and seizures were also common and seen in four patients [3,4,6,9,14,16,18]. An infective source was identified in a total of ten cases. ...
... Only 0.9-1.2% of vertebral hemangiomas are symptomatic [3,4]. When hemangiomas occur in the thoracic spine, they are more likely to cause problems due to the narrow vertebral canal, which mandates more aggressive management to avoid severe neurological deficits [5,6]. To date, the treatment of vertebral hemangioma with extraosseous extension with accompanying neurological dysfunction remains to be established. ...