The term gastroenteritis denotes inflammation of the gastrointestinal tract, most commonly the result of infections with bacterial, viral, or parasitic pathogens ( Tables 366.1 to 366.3 ). Many of these infections are foodborne illnesses ( Table 366.4 ). Several clinical…
Acknowledgments The author acknowledges substantial use of the work of David A. Blanco and Harpreet Pall from the previous edition of this chapter. Inflammatory enterocolitis is a pathologic diagnosis characterized by ileal, colonic, and/or rectal inflammation that can range from…
Acknowledgments The author acknowledges substantial use of the work of I. Kaur in the previous editions of this chapter. Approach To guide the clinical approach, abdominal pain is classified as either acute or chronic Acute abdominal pain demands rapid diagnosis…
INTRODUCTION Streptococcus pyogenes (group A β-hemolytic Streptococcus [GAS]) is a Gram-positive bacterial pathogen that has presented an ongoing challenge to scientists and clinicians throughout modern medical history. Descriptions of epidemics of fulminant illnesses in previously healthy individuals date back to…