Acute colonic pseudo-obstruction (ACPO or Ogilvie syndrome) is an under-recognized disorder characterized by acute and extensive dilatation of the colon in the absence of an anatomic lesion obstructing the gastrointestinal tract.

HELLP syndrome develops in pregnancy characterized by the triad of haemolysis, elevated liver enzymes, and a low platelet count

Acute mastitis is usually associated with lactation and is frequently due to Staphylococcus aureus. It should be distinguished from simple “congestive mastitis” (breast engorgement).