Nasal endoscopy-evaluation in epistaxis

Epistaxis is generally of two types : one where a cause is recognised ( Local or Systemic ) and the other where the cause is not known. All cases of nose bleeds with no evident cause is customarily categorised into an Idiopathic type. Anterior rhinoscopy ordinarily gives a very limited view of the nose and the probable cause of epistaxis, and this, we feel could he one of the reasons why a proper diagnosis is not always likely. Another problem is the poor localisation of the site of bleeding point. Such cases pose a problem in implementing treatment, as the cause or the site is not easily located. This study tries to venture the exquisite and wide vision provided by the Nasal endoscope. This study also tries to investigate the possibility of reaching the inaccessible bleeding points, to treat them directly. The study was conducted on 60 patients who attended the Out Patient Department and the Indoor ward with complaints of Epistaxis.

Nasal encephalocoele -an atypical case

Nasal encephalocoele present at birth as a characteristic swelling over the nose and widening of intracanthal distance. Atypical nasal encephalocoeles are usually missed at birth due to absence of any external swelling and they present with diagnostic difficulties. These are very rare and present with only an intranasal mass. We report a case of an atypical nasal encephalocnele in a 8 year old boy who presented with a unilateral intranasal mass and cerebrospinal fluid rhinorrhoea.

Genomic impact of cigarette smoke, with application to three smoking-related diseases

There is considerable evidence that inhaled toxicants such as cigarette smoke can cause both irreversible changes to the genetic material (DNA mutations) and putatively reversible changes to the epigenetic landscape (changes in the DNA methylation and chromatin modification state). The diseases that are believed to involve genetic and epigenetic perturbations include lung cancer, chronic obstructive pulmonary disease (COPD), and cardiovascular disease (CVD), all of which are strongly linked epidemiologically to cigarette smoking. In this review, we highlight the significance of genomics and epigenomics in these major smoking-related diseases. We also summarize the in vitro and in vivo findings on the specific perturbations that smoke and its constituent compounds can inflict upon the genome, particularly on the pulmonary system. Finally, we review state-of-the-art genomics and new techniques such as high-throughput sequencing and genome-wide chromatin assays, rapidly evolving techniques which have allowed epigenetic changes to be characterized at the genome level. These techniques have the potential to significantly improve our understanding of the specific mechanisms by which exposure to environmental chemicals causes disease. Such mechanistic knowledge provides a variety of opportunities for enhanced product safety assessment and the discovery of novel therapeutic interventions.

Preliminary experience with the percutaneous embolization of juvenile angiofibromas using only ethylene-vinyl alcohol copolymer (Onyx) for preoperative devascularization prior to surgical resection

BACKGROUND AND PURPOSE

Juvenile angiofibromas are hypervascular tumors that may benefit from preoperative devascularization to reduce intraoperative blood loss. Our purpose was to evaluate the extent of angiographic devascularization and intraoperative blood loss by using only Onyx for percutaneous juvenile angiofibroma tumor embolization.

MATERIALS AND METHODS

We reviewed the clinical records and preoperative and postoperative imaging studies of a consecutive series of 9 patients with juvenile angiofibromas who were treated with preoperative embolization with direct percutaneous injection of Onyx followed by resection from a standard open surgical or endoscopic approach.

RESULTS

Two Fisch type I, 1 Fisch type II, 5 Fisch type IIIa, and 1 Fisch type IVa tumor were treated. Complete devascularization was achieved in all cases percutaneously with only Onyx. There were no complications. The average intraoperative blood loss was 567.7 mL (range, 10-1700 mL). An average of 2.2 needles (range, 1-5 needles) was placed into the tumor. An average of 14.6 mL of Onyx (range, 2-25 mL) was injected into each tumor. Four Fisch type IIIa tumors were removed completely from only an ENE approach.

CONCLUSIONS

Presurgical direct percutaneous embolization of a juvenile angiofibroma with only EVOH before surgical resection is safe and feasible. Our preliminary experience suggests that Onyx may offer a higher degree of devascularization compared with other embolic agents. This may facilitate an easier surgical resection with lower blood loss.

Acute life-threatening hemorrhage in patients with head and neck cancer presenting with carotid blowout syndrome: follow-up results after initial hemostasis with covered-stent placement

BACKGROUND AND PURPOSE

CSP in patients with HNC presenting with CBS can provide immediate hemostasis to prevent exsanguination. We evaluated the safety and efficacy of CSP to control acute life-threatening hemorrhage in patients with HNC presenting with CBS.

MATERIALS AND METHODS

We retrospectively reviewed 10 patients (7 men, 3 women; mean age, 59 years) with HNC presenting with acute life-threatening hemorrhage from CBS that was treated with CSP. We studied patient demographics, presentations, procedures, initial and delayed complications, and technical and clinical outcomes on follow-up.

RESULTS

All patients achieved immediate hemostasis following CSP. Periprocedural complications consisted of groin hematomas (n=2), acute limb ischemia requiring thrombectomy, and an asymptomatic temporal lobe hemorrhage. Imaging and clinical follow-up were available for a mean of 17.7 months (range, 1-60 months). Two patients remained asymptomatic with a patent stent and no evidence of rebleeding at 17 and 21 months, respectively. Recurrent hemorrhages requiring retreatment were encountered in 3 patients secondary to stent infections (30%) at mean duration of 8 months. Neurologic morbidity resulted from stent thrombosis and stroke at 8 months in a single patient. Mortality was unrelated to CSP but was a result of palliative hospice care (n=3) at a mean of 2 months or natural disease progression (n=1) with documented patency of the stent at 6 months.

CONCLUSIONS

Acute life-threatening hemorrhage from CBS related to advanced HNC can be safely and effectively treated with CSP. However, potential delayed ischemic or infectious complications are common in the exposed or infected neck.

Decreased glucose tolerance and plasma adiponectin:resistin ratio in a mouse model of post-traumatic stress disorder

AIMS/HYPOTHESIS

Obesity and type 2 diabetes are among the most serious health pathologies worldwide. Stress has been proposed as a factor contributing to the development of these health risk factors; however, the underlying mechanisms that link stress to obesity and diabetes need to be further clarified. Here, we study in mice how chronic stress affects dietary consumption and how that relationship contributes to obesity and diabetes.

METHODS

C57BL/6J mice were subjected to chronic variable stress (CVS) for 15 days and subsequently fed with a standard chow or high-fat diet. Food intake, body weight, respiratory quotient, energy expenditure and spontaneous physical activity were measured with a customised calorimetric system and body composition was measured with nuclear magnetic resonance. A glucose tolerance test was also applied and blood glucose levels were measured with a glucometer. Plasma levels of adiponectin and resistin were measured using Lincoplex kits.

RESULTS

Mice under CVS and fed with a high-fat diet showed impaired glucose tolerance associated with low plasma adiponectin:resistin ratios.

CONCLUSIONS/INTERPRETATION

This study demonstrates, in a novel mouse model, how post-traumatic stress disorder enhances vulnerability for impaired glucose metabolism in an energy-rich environment and proposes a potential adipokine-based mechanism.

Fibrovascular polyp of the oropharynx

Fibrovascular polyps are benign but rare tumours of the upper digestive tract. In most of the cases reported to date, fibrovascular polyps have originated from the oesophagus or hypopharynx. In 85-90 percent of these reports, the commonest site was adjacent to the cricopharyngeal muscle. We report a very rare case, the third in the English language literature, of a fibrovascular polyp arising from the oropharynx. The patient provided a history of coughing with regurgitation of the polyp, which caused respiratory discomfort that was only relieved by swallowing it. The patient was successfully treated by excision through the peroral route. There was no recurrence in the three years of follow-up. We also discuss the various diagnostic tests available and the pathogenesis and histopathology of such lesions.