Postprandial contraction of the gallbladder likely with no concretions/calculi within. (The contracted GB precludes optimal assessment of its lumen on sonography, hence the term ‘likely.’)

GE:
konkrementfrei

Unter einem Konkrement versteht man Ablagerungen, die sich in Hohlorganen bilden. Man kann dazu auch "Stein" sagen. So bezeichnet man zum Beispiel:
Konkremente in der Gallenblase oder in den Gallenwegen als Gallensteine,
Konkremente in der Niere als Nierensteine und
Konkremente in den Harnwegen als Harnsteine.
Wenn der Arzt in der Untersuchung keine Steine sieht, dann sagt er, die untersuchten Organe sind konkrementfrei.
https://befunddolmetscher.de/konkrementfrei

EN:
Gallbladder bile composition of patients with cholesterol stones (n = 145) compared to pigment-stone (n = 23) and gallstone-free (n = 87) patients.
https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2796...

In patients with cholesterol gallstones, impaired gallbladder motility persists in the stone-free gallbladder following successful extracorporeal shock-wave lithotripsy...
https://www.sciencedirect.com/topics/medicine-and-dentistry/...

In this sketch of the operative dis.section, the duodenum ih depicted as mobilized and rotated toward the midline thus exposing the common bile duct. A slender probe encountered luminal obstruction where the duct wall was thickened and sclerotic. Aspirated bile was free of concrements. The liverwas smooth and sharp-edged.
https://scholarlycommons.henryford.com/cgi/viewcontent.cgi?a...

Same patient: endoscopic retrograde cholangiography shows the common bile duct free of concrements
https://vdoc.pub/documents/glucagon-in-gastroenterology-3tqo...

X-ray follow-up studies showed concrement-free bile ducts in 85.2%, recurrent stones in 11.3%, and a stenosis of EST in 3.5%.
https://pubmed.ncbi.nlm.nih.gov/3168952/