Thoracoscopic management of posterior mediastinal neurogenic tumours.

Background: This study describes the surgical technique of thoracoscopic resection of posterior mediastinal neurogenic tumours and reporting the surgical outcomes. Methods: This is a retrospective analysis of 21 patients operated over 7 years in a dedicated thoracic surgery centre. The demographic and post-operative parameters along with complications were recorded and analysed. Results: Twelve patients had right-sided tumours, while 9 had left-sided lesions, and 9 were on the left side. The most common diagnosis was schwannoma (n = 15, 71.42%), followed by neurofibroma (n = 4, 19.04%). The average surgery duration was 104 min (85-135 min), and the mean blood loss was 120 ml (25 ml-250 ml). The average lesion size was 4.8 cm (2 cm-7 cm). Conversion to open procedure was required in one patient. Two patients (14.2%) developed complications. One patient developed Horner's Syndrome and the other developed post-operative lung atelectasis. The median follow-up was 36 months (6-90 months). No recurrence was observed during the follow-up period. Conclusions: Thoracoscopic approach to posterior mediastinal neurogenic tumours is feasible and allows for low morbidity, short hospital stay and superior cosmesis.

Multisystem inflammatory syndrome in neonates (MIS-N) associated with SARS-CoV2 infection: a case series.

Multisystem inflammatory syndrome in neonates (MIS-N) is hypothesised to be caused either following transplacental transfer of SARS-CoV2 antibodies or antibodies developed in the neonate after infection with SARS-CoV-2. In this paper, we aim to discuss the clinical manifestations, laboratory features, and management of neonates diagnosed with MIS-N. We collated information from five participating hospitals in western India. A cohort of newborn infants presenting with multi-system involvement, along with the presence of SARS-CoV2 antibodies, was identified. Current proposed international diagnostic criteria for MIS-N were used to group the cases into three categories of Most likely, Possible, and Unlikely MIS-N. A total of 20 cases were reported with a diagnosis of MIS-N, all having high titres of SARS CoV2 IgG antibodies and negative for SARS CoV2 antigens. Most likely MIS (n = 5) cases presented with respiratory distress (4/5), hypotension and shock (4/5), and encephalopathy (2/5). Inflammatory markers like CRP (1/5), Procalcitonin (1/5), Ferritin (3/5), D-dimer (4/5), and LDH (2/5) were found to be elevated, and four of them had significantly high levels of proBNP. The majority of them (4/5) responded to immunomodulators, three neonates were discharged home, and two died. Possible MIS infants (n = 9) presented with fever (7/9), respiratory distress (4/9), refusal to feed (6/9), lethargy (5/9), and tachycardia (3/9). ProBNP as a marker of cardiac dysfunction was noted to be elevated in four (4/9) infants, correlating with abnormal echocardiography findings in two. In the Unlikely MIS (n = 6) category, three (3/6) infants presented with respiratory distress, one (1/6) with shock and cardiac dysfunction, and only one (1/6) with fever. All of them had elevated inflammatory markers. However, there were other potential diagnoses that could have been responsible for the clinical scenarios in these six cases.   Conclusion: MIS-N requires a high index of suspicion and should be considered in a neonate presenting with two or more systems involvement, in the presence of SARS-CoV2 antibodies, along with elevated inflammatory markers, once other common neonatal conditions have been ruled out. What is Known: • Severe acute respiratory syndrome coronavirus-2 (SARS-CoV2) associated multisystem inflammatory syndrome in children (MIS-C) is  widely reported in paediatric population, however only few reports of newborn affection. • MIS-C is known to cause by virus-induced post-infective antibody mediated immune dysregulation with severe multi-system affection. What is New: • MIS-N may present with varied clinical manifestations with multi-system involvement of variable severity with milder disease in term and severe disease with cardiac dysfunction in preterm newborns. • Multisystem inflammatory syndrome in newborns (MIS-N) is postulated to occur following immune dysregulation associated with transplacental transfer of SARS-CoV2 antibodies or antibodies developed in the neonate after infection with SARS-CoV-2.

Video-assisted thoracoscopic surgery: The preferred method to manage pulmonary sequestration.

BACKGROUND: This study aims at describing the feasibility and safety of video-assisted thoracic surgery (VATS) in benign diseases such as pulmonary sequestrations (PSs) and report the surgical outcomes. MATERIALS AND METHODS: This is a retrospective analysis of prospectively maintained data of 25 patients who were operated for PS over 7 years at a dedicated thoracic surgery centre in India. Pre-operative details, operative technique and details, post-operative details and complications were recorded and analysed. RESULTS: There were 15 (60%) males and 10 (40%) females, with a median age of 22.28 years (range, 16-28 years). All patients had intra-lobar type of sequestration. The most commonly involved was left lower lobe (n = 15 patients, 60%) followed by the right lower lobe (n = 10 patients, 40%). The origin of blood supply was from the descending thoracic aorta in 18 patients (72%), the abdominal aorta in 5 (20%) and the coeliac trunk and the inferior phrenic artery in one patient (4%) each. All patients underwent complete lobar resection. One patient was converted because of dense hilar adhesion. The average duration of surgery was 179 min and the average blood loss was 204 ml. The median hospital stay and chest tube duration were 4 and 3 days, respectively. One patient was re-explored because of post-operative bleeding. Only one patient had an air leak for >7 days. The median follow-up was 42 months (range, 6-90 months) without any recurrence. CONCLUSIONS: VATS is a safe, feasible and effective option for PS at experienced centres.

Small Bowel Obstruction Masquerading as Acute ST Elevation Myocardial Infarction.

ST segment elevation on EKG remains among the most important presentations of acute myocardial infarction. Due to the urgency of intervention for this finding, other clinical scenarios causing ST elevations on EKG may sometimes go unaddressed and can lead to fatal complications. We present a case of an 86-year-old male presenting with small bowel obstruction leading to EKG findings of ST segment elevation in the absence of critical coronary obstruction. The EKG finding resolved after the improvement of small bowel obstruction reflecting the reversible cause of the changes.

Aortico-Left Atrial Fistula: A Rare Complication of Bioprosthetic Aortic Valve Endocarditis Secondary to Enterococcus faecalis.

Paravalvular aortic root abscess with intracardiac fistula formation is an exceedingly rare complication of infective endocarditis. This condition is even more rarely encountered in patients with bioprosthetic valve endocarditis. We report an unusual case of a 68-year-old Bosnian female with a bioprosthetic aortic valve, who developed an extensive aortic root abscess, complicated by an aortico-left atrial intracardiac fistula. This case illustrates that a high index of suspicion, prompt diagnosis by echocardiography, proper antibiotic therapy, and early surgical intervention are crucial to improving treatment outcomes for this rare condition.

Temporoparietal Headache as the Initial Presenting Symptom of a Massive Aortic Dissection.

Aortic dissection is a life-threatening medical emergency often presenting with severe chest pain and acute hemodynamic compromise. The presentation of aortic dissection can sometimes be different thus leading to a challenge in prompt diagnosis and treatment as demonstrated by the following presentation and discussion. We present a case of a 71-year-old male who presented to the emergency department with complaints of left sided temporoparietal headache and was eventually diagnosed with a thoracic aortic dissection involving the ascending aorta and descending aorta, with an intramural hematoma in the descending aorta. This case illustrates the importance of keeping in mind aortic dissection as a differential diagnosis in patients with acute onset headaches in which any intracranial source of headache is not found.

Mycoplasmal upper respiratory infection presenting as leukocytoclastic vasculitis.

Mycoplasma is a virulent organism that is known to primarily infect the respiratory tract; however, affection of the skin, nervous system, kidneys, heart and bloodstream has been observed in various forms, which include Stevens Johnson syndrome, erythema multiforme, toxic epidermal necrolysis, encephalitis, renal failure, conduction system abnormalities and hemolytic anemia. Small vessel vasculitis is a lesser-known complication of mycoplasma pneumonia infection. We report a case of mycoplasmal upper respiratory tract infection with striking cutaneous lesions as the presenting symptom. Mycoplasmal infection was confirmed by serology testing, skin biopsy was suggestive of leukocytoclastic vasculitis. This case brings forth an uncommon manifestation of mycoplasmal infection with extra-pulmonary affection, namely small vessel vasculitis.

Luteinizing hormone-releasing hormone I (LHRH-I) and its metabolite in peripheral tissues.

Luteinizing hormone-releasing hormone (LHRH) was first isolated in the mammalian hypothalamus and shown to be the primary regulator of the reproductive system through its initiation of pituitary gonadotropin release. Since its discovery, this form of LHRH (LHRH-I) has been shown to be one of many structural variants with a variety of roles in both the brain and peripheral tissues. Enormous interest has been focused on LHRH-I and LHRH-II and their cognate receptors as targets for designing therapies to treat cancers of the reproductive system. LHRH-I is processed by a zinc metalloendopeptidase EC 3.4.24.15 (EP24.15) that cleaves the hormone at the fifth and sixth bond of the decapeptide (Tyr(5)-Gly(6)) to form LHRH-(1-5). We have previously reported that the autoregulation of LHRH gene expression can also be mediated by its processed peptide, LHRH-(1-5). Furthermore, LHRH-(1-5) has also been shown to be involved in cell proliferation. This review will focus on the possible roles of LHRH and its processed peptide, LHRH-(1-5), in non-hypothalamic tissues.