PEComa of the lung

Perivascular epithelioid cell tumor (PEComa), also called clear cell \u2032sugar\u2032 tumor of the lung, is a rare benign tumor arising from perivascular epithelioid cells (PECs). We report a case of a 15-year-old boy who presented with right lower lobe lesion which turned out to be a clear cell tumor of the lung. An [18F]-fluoro-2-deoxy-D-glucose (FDG) - positron emission tomography (PET) scan revealed mild FDG uptake in the lung lesion (SUV< 1) with no active uptake elsewhere in the body. We discuss the clinical, radiologic and immunohistochemical features of clear cell \u2032sugar\u2032 tumor of lung and compare them with published literature

Genomic characterization and epidemiology of an emerging SARS-CoV-2 variant in Delhi, India

Delhi, the national capital of India, experienced multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreaks in 2020 and reached population seropositivity of >50% by 2021. During April 2021, the city became overwhelmed by COVID-19 cases and fatalities, as a new variant, B.1.617.2 (Delta), replaced B.1.1.7 (Alpha). A Bayesian model explains the growth advantage of Delta through a combination of increased transmissibility and reduced sensitivity to immune responses generated against earlier variants (median estimates: 1.5-fold greater transmissibility and 20% reduction in sensitivity). Seropositivity of an employee and family cohort increased from 42% to 87.5% between March and July 2021, with 27% reinfections, as judged by increased antibody concentration after a previous decline. The likely high transmissibility and partial evasion of immunity by the Delta variant contributed to an overwhelming surge in Delhi

A numerical modeling of cryogenic heat exchanger: Review

ABSTRAC

Novel cost-effective method of laparoscopic feeding-jejunostomy

A feeding jejunostomy tube placement is required for entral feeding in a variety of clinical scenarios. It offers an advantage over gastrostomies by eliminating the risk of aspiration. Standard described laparoscopic methods require special instrumentation and expensive custom-made tubes. We describe a simple cost-effective method of feeding jejunostomy using regular laparoscopic instruments and an inexpensive readily available tube. The average operating time was 35 min. We had no intra-operative complications and only one post-operative complication in the form of extra-peritoneal leakage of feeds due to a damaged tube. No complications were encountered while pulling out the tubes after an average period of 5–6 weeks

Effectiveness of sodium hypochlorite gel and solutions in endodontics: A systematic review

Aim: The purpose of this systematic review was to evaluate the superiority of sodium hypochlorite (NaOCl) liquid or NaOCl gel in disinfecting root canals. Methods: Online electronic databases such as PubMed-MEDLINE, Scopus, and Embase were explored for suitable studies. In this evaluation, papers were deemed eligible for the data extraction if they included in vitro experiments using NaOCl liquid or NaOCl gel for canal irrigation and its influence on the smear layer, as well as their elimination of the bacteria from the root canal. The review was registered in International Prospective Register of Systematic Reviews with registration number CRD420223441126. Results: One hundred and sixty-one articles were found after initial screening and four articles were included for qualitative synthesis. Overall risk of bias was “high.” Two studies did not show significant variations among 2.5% NaOCl solution and gel. Conclusion: As per rigorous investigation done, NaOCl solution proved more efficient against Enterococcus faecalis than its gel form. More research is needed to determine the best effective NaOCl type, concentration, duration, and treatment regimens

PEComa of the lung

Perivascular epithelioid cell tumor (PEComa), also called clear cell ′sugar′ tumor of the lung, is a rare benign tumor arising from perivascular epithelioid cells (PECs). We report a case of a 15-year-old boy who presented with right lower lobe lesion which turned out to be a clear cell tumor of the lung. An [18F]-fluoro-2-deoxy-D-glucose (FDG) - positron emission tomography (PET) scan revealed mild FDG uptake in the lung lesion (SUV< 1) with no active uptake elsewhere in the body. We discuss the clinical, radiologic and immunohistochemical features of clear cell ′sugar′ tumor of lung and compare them with published literature