loculation

noun

1. (countable, uncountable)The localized failure of a region to drain fluids, resulting in an enlarged mass.

   “When no response occurs within 24 hours, loculation should be excluded by ultrasonography, and urokinase should be infused to enhance drainage.”

   “In this stage, there is a progressive tendency toward loculation of the fluid and the formation of limiting membranes.”

   “Trauma patients are at risk of developing gram-positive empyema, characterized by early loculations and formation of dense adhesions because of hemothorax, which offers both a rich supply of bacterial nutrients as well as fibrin.”