Extranodal Natural Killer/T-cell Lymphoma With an Unusual Presentation: A Case Report and Literature Review.

The Epstein-Barr virus is closely linked to a lymphoproliferative disease known as natural killer/T-cell lymphoma (NKTL). Early identification of NKTL might be challenging because it can resemble other nasopharyngeal pathologies. Contrary to the presented case, T-cell lymphoma often develops in the nasal canal and spreads to the oral cavity. Here, we present the case of a 45-year-old man with an unusual presentation of NKTL presenting initially as acute follicular tonsillitis.

TMEM203 is a binding partner and regulator of STING-mediated inflammatory signaling in macrophages.

Regulation of IFN signaling is critical in host recognition and response to pathogens while its dysregulation underlies the pathogenesis of several chronic diseases. STimulator of IFN Genes (STING) has been identified as a critical mediator of IFN inducing innate immune pathways, but little is known about direct coregulators of this protein. We report here that TMEM203, a conserved putative transmembrane protein, is an intracellular regulator of STING-mediated signaling. We show that TMEM203 interacts, functionally cooperates, and comigrates with STING following cell stimulation, which in turn leads to the activation of the kinase TBK1, and the IRF3 transcription factor. This induces target genes in macrophages, including IFN-ß. Using Tmem203 knockout bone marrow-derived macrophages and transient knockdown of TMEM203 in human monocyte-derived macrophages, we show that TMEM203 protein is required for cGAMP-induced STING activation. Unlike STING, TMEM203 mRNA levels are elevated in T cells from patients with systemic lupus erythematosus, a disease characterized by the overexpression of type I interferons. Moreover, TMEM203 mRNA levels are associated with disease activity, as assessed by serum levels of the complement protein C3. Identification of TMEM203 sheds light into the control of STING-mediated innate immune responses, providing a potential novel mechanism for therapeutic interventions in STING-associated inflammatory diseases.

Facebook as a Learning Tool: Perception of Stroke Unit Nurses in a Tertiary Care Hospital in Islamabad.

Objective To obtain the perception of nurses on the use of Facebook as a learning tool. Materials & methods We conducted a pilot observational study in which data were collected through a detailed course evaluation and feedback survey questionnaire. Twelve stroke care nurses were enrolled in a stroke course specifically designed to provide participants with information and knowledge about stroke unit nursing care. Firstly, a closed Facebook group consisting of the participants and facilitators was created. An activity in accordance with the course content was posted in the group daily. Before the start of the course, a pre-course test was conducted. The four-week course culminated in a graded written examination. Its results were compared with the pre-course test. A detailed feedback questionnaire was given to the participants at the end of the course, which was specifically designed to elicit perceptions of nurses about the use of Facebook as a learning tool. Results Of the 12 enrolled nurses, 10 completed the certification and the post-course feedback evaluation. Facebook was used by all participants as a platform to view and study the course contents. The timing of the course activities was rated "very good" by three and 'good' by six of 10 participants. However, one of the major issues faced by five participants was problematic internet access. The overall rating of the course was "very good" by five participants, "good" by three, and "satisfactory" by two of 10 participants. The post-course test showed that nine of 10 candidates passed with scores >70% compared to only two candidates getting scores >50% in the pre-course test. Conclusion Facebook use enabled participants to study the material when their schedule permitted them. The online teaching and facilitation were ideal for our full-time stroke unit nurses as reflected by their improved post-course test results.

Functional Outcome After Decompressive Craniectomy in Patients with Dominant or Non-Dominant Malignant Middle Cerebral Infarcts.

BACKGROUND:  The use of decompressive craniectomy (DC) has been studied in the setting of different conditions, including traumatic brain injury, subarachnoid hemorrhage, and malignant middle cerebral artery (MCA) infarction. The rationale of this study is to determine the functional outcome after DC in patients with malignant MCA infarcts. METHODS:  A longitudinal cohort study was performed based on patients diagnosed with malignant MCA territory infarction admitted to the Neurosurgery Department of a tertiary care hospital in Islamabad, Pakistan between July 2015 and November 2016. All patients had a clinical diagnosis of stroke according to the World Health Organization (WHO) stroke criteria. RESULTS:  A total of 34 patients participated in this study, out of which 20/31 (64.5%) were males while 11/31 (35.5%) were females with a mean age of 51.61 ± 13.96 years. The mean time from diagnosis to surgery was 60.61 ± 49.83 hours. Out of 31 patients, 18 (58.1%) had a right middle cerebral artery infarct (RMCAI) and 13 (41.9%) had a left middle cerebral artery infarct (LCAI). Logistic regression was applied to assess the association between the type of MCA infarct with the National Institutes of Health Stroke Scale (NIHSS), modified Rankin Scale (mRS), modified Barthel Index (mBI) scores, and upper and lower limb motor power. However, the logistic regression model was not statistically significant χ2 (4) = 3.896, p = 0.866. There was a statistically significant mild improvement of neurological scores and upper and lower motor power over a course of six months, but the overall functional outcome was poor with mBI < 60 and mRS > 4 (p < 0.001) with total mortality of 8.7%. CONCLUSION:  Decompressive craniectomy is a life-saving surgery that appears to benefit patients with malignant MCA infarcts of either the dominant or non-dominant cerebral hemisphere. Decompressive craniectomy results in mild improvements in neurological scores but still poor functional outcome after six months.

Recurrent epistaxis caused by an intranasal supernumerary tooth in a young adult.

PATIENT: Male, 27. FINAL DIAGNOSIS: Recurrent epistaxis. SYMPTOMS: Nasal bleeding. MEDICATION: -. CLINICAL PROCEDURE: -. SPECIALTY: Pediatrics and Neonatology. OBJECTIVE: Congenital defects/diseases. BACKGROUND: Recurrent epistaxis is a common disorder among children and young adults. We report an unusual cause, intranasal supernumerary tooth causing friction with Little's area of the nasal septum. CASE REPORT: A 22-year-old male presented with recurrent, mild, unilateral left-sided epistaxis once to twice per month for 3 years. This usually occurred after minor nasal trauma or rubbing his nose. The patient also suffered from recurrent tonsillitis. There was neither history of blood transfusion or nasal packing, nor a history suggestive of bleeding diathesis. Anterior rhinoscopy revealed ivory white nasal mass antero-inferiorly in the left nasal cavity touching Little's area. There was no bleeding. Nasal endoscopy showed a white cylindrical bony mass 1 cm long arising from the floor of the nose, with no attachment to the nasal septum or the lateral wall of the nose. Examination of the right nasal cavity was unremarkable. CONCLUSIONS: Nasal teeth result from the ectopic eruption of supernumerary teeth and may cause a variety of symptoms including recurrent epistaxis. Their clinical and radiologic presentation is so characteristic that their diagnosis is not difficult. CT scan is helpful in planning management. Early extraction prevents further complications and prevents further attacks of epistaxis.