Ultrasounds are acoustic vibrations that are not perceived by the human ear as their frequency is greater than 20,000 Hz. They are artificially generated by the action of the electric current, whose polarity is periodically reversed, on a quartz crystal, subjecting it, by the action of the electromagnetic field created, to successive contractions and expansions. This alternation of movements generates vibrations, which, transmitted to cellular and intercellular structures, cause collisions and generate heat.

Diagnosis is a process that identifies, explains, or establishes the individual’s disease from its symptoms and signs. Early and precise diagnosis is crucial since it influences the efficacy of treatment and avoids longterm complications for the infected person. Further, in the case of infectious diseases, undiagnosed patients can transmit the disease to a healthy population unknowingly. Besides, most of the diseases evolve with the time that significantly affects the clinical outcomes.

Primary small cell neuroendocrine carcinoma of the urinary bladder is a rare histological type shows poor differentiation and behaves in a highly aggressive manner. It accounts to 0.3- 0.7% of all bladder tumors [1,2]. Neuroendocrine carcinomas predominantly occur in respiratory and gastrointestinal tract and very rarely in the urinary bladder.

The term paraduodenal pancreatitis and groove pancreatitis are today used interchangeably, with all conditions having similar manifestations; they refer to an uncommon and still under-recognized form of recurrent or chronic pancreatitis that affects the so-called groove. The groove represents the potential space between the head of the pancreas, medially and the second part of the duodenum, laterally. It is bordered by the duodenal bulb and the third part of the duodenum in the superior and posteroinferior aspects, respectively. The inferior vena cava also forms the posterior aspect. Distal common bile duct (CBD), ampulla, major and minor papilla, superior pancreaticoduodenal vessels and lymphatics, as well as some lymph nodes, are anatomically present in the groove.

This paper analyses any possible association of various factors like gender, last COVID-19 PCR test results, BCG Vaccination, Seasonal Flu vaccination, occupation and confirmed case contact history with COVID-19 RDT results of the participants.