Bacteria in the inflamed gallbladder with gas production causing a dirty shadow is known as which condition?

Bacteria in the inflamed gallbladder with gas production causing a dirty shadow is known as which condition?

• A. Emphysematous cholecystitis
• B. Empyema
• C. Porcelain gallbladder
• D. Milk of Calcium Bile

Answer: (A)

Gas-forming infection of the gallbladder leads to gas inside the gallbladder wall or lumen, which on ultrasound appears as bright echoes with dirty, speckled shadowing from the gas. This is the hallmark of emphysematous cholecystitis, a dangerous variant of acute cholecystitis caused by gas-producing bacteria. The presence of intraluminal or intramural gas creates the dirty shadow seen on imaging, signaling this specific condition. Empyema would involve pus in the gallbladder and may show fluid with debris but not gas artifacts. Porcelain gallbladder refers to a calcified gallbladder wall, seen as a highly echogenic rim with posterior shadowing, not gas. Milk of calcium bile shows layering of calcium-containing material and typically different imaging features, without gas causing dirty shadowing.

Gas-forming infection of the gallbladder leads to gas inside the gallbladder wall or lumen, which on ultrasound appears as bright echoes with dirty, speckled shadowing from the gas. This is the hallmark of emphysematous cholecystitis, a dangerous variant of acute cholecystitis caused by gas-producing bacteria. The presence of intraluminal or intramural gas creates the dirty shadow seen on imaging, signaling this specific condition.

Empyema would involve pus in the gallbladder and may show fluid with debris but not gas artifacts. Porcelain gallbladder refers to a calcified gallbladder wall, seen as a highly echogenic rim with posterior shadowing, not gas. Milk of calcium bile shows layering of calcium-containing material and typically different imaging features, without gas causing dirty shadowing.