squamous cell carcinoma (scc) is the second most common type of skin cancer with potential risks for metastasis and recurrence if left untreated or incompletely excised. this case series study was designed to determine the frequency of incompletely excised sccs and the related risk factors. a total of 273 sccs (253 patients) excised in razi dermatology hospital of tehran from 2006-2008, were ev...

I n a prior communication we demonstrated that transection of the optic nerve of the cat with consequent retrograde neuronal degeneration did not lead to alteration of the ipsilateral retinal vasculature. We interpreted this to mean that retinal neuronal degeneration does not, of itself, cause an associated vascular degeneration. In the present study the vasculature of the optic disc region of ...

Although innominate artery transection for innominate artery compression of the trachea is recently used for prevention of life-threatening complications (e.g. massive bleeding and obstructive apnoea) in patients with neurological disorders, pre-existing tracheostomy poses a risk of mediastinal infection with sternotomy. We successfully performed innominate artery transection on such a patient ...

Changes in epidurally induced (S1) spinal cord reflexes were studied as a function of the level of restoration of stepping ability after spinal cord transection (ST). Three types of responses were observed. The early response (ER) had a latency of 2.5 to 3 ms and resulted from direct stimulation of motor fibers or motoneurons. The middle response (MR) had a latency of 5 to 7 ms and was monosyna...

In their excellent article, “Robotic Follicular Unit Extraction in Hair Transplantation,” Avram and Watkin give a review of the salient aspects of the newly evolving field of robotic hair transplantation. A significant contribution of this article is the data on transection rates. The authors found that the mean transection rate of robotic extraction is 6.6% in their 20 cases. This compares fav...

In order to study the role of ciliary neurotrophic factor (CNTF) and its receptor (CNTF-R) in the response of spinal cord neurons to axotomy, we measured the levels of CNTF mRNA in nerve and CNTF-R mRNA in spinal cord following transection of sciatic nerve, using reverse transcriptase PCR. We found CNTF mRNA levels in the nerve fell and that CNTF-R mRNA levels in spinal cord increased at both 1...

Extra-hepatic bile duct injury from blunt abdominal trauma is uncommon. Complete traumatic transection of the common bile duct (CBD) with subsequent complication of a choledochoduodenal fistula is extremely rare and only a handful of reports are found in the medical literature. We describe a 20-year-old male patient who presented with a complete transection of the CBD following blunt abdominal ...

Background: Olfactory ensheathing glia (OEG) has been shown to have a neuroprotective effect after being transplanted in rats with spinal cord injury. This study was conducted to determine the possible beneficial results of olfactory mucosa transplantation (OMT) which is a source of OEG on functional recovery and axonal regeneration after transection of the sciatic nerve. Methods: In this study...

Olfactory ensheathing cells (OECs) prepared from the olfactory bulbs of adult transgenic Sprague Dawley (SD) rats expressing green fluorescent protein (GFP) were transplanted into a dorsal spinal cord transection lesion of SD rats. Five weeks after transplantation, the cells survived within the lesion zone and oriented longitudinally along axons that bridged the transection site. Although the h...