Your task is to organize the following unstructured radiology report into the provided template. Place each information in its appropriate section in the template:

Unstructured report:
60-year-old with symptoms of abdominal pain and swelling, no prior imaging for comparison, gallbladder demonstrates diffuse wall thickening and pericholecystic fluid, dilation of the gallbladder with multiple intraluminal septations, cystic duct not well visualized, dilatation of the portal vein with multiple collateral vessels in the periportal region, extensive lymphadenopathy within the porta hepatis, retroperitoneum, and mesentery, diffuse hepatic steatosis, spleen mildly enlarged measuring 14 cm in craniocaudal dimension.

Template:
CLINICAL HISTORY:

TECHNIQUE: Contrast-enhanced computed tomography (CT) of the abdomen and pelvis was performed.

COMPARISON:

FINDINGS:

Gallbladder: The gallbladder is normal in size and appearance, with no wall thickening or pericholecystic fluid.

Lymphatic and venous structures: The portal vein, hepatic veins, and inferior vena cava appear normal. No lymphadenopathy..

Liver: The liver is normal in size and contur, with no focal lesions. Bile ducts appear unremarkable.

Pancreas: The pancreas is normal in size, shape, and density. No pancreatic ductal dilation.

Spleen: The spleen is normal in size and appearance, with no focal lesion.

Kidneys: Both kidneys are normal in size with preserved corticomedullary differentiation. No renal calculi or hydronephrosis are seen.

Adrenal glands: The adrenal glands are normal in size and appearance.

Stomach and small bowel: The stomach is normal in appearance, with no distention, wall thickening, or abnormal enhancement. The small bowel demonstrates normal caliber without evidence of obstruction, wall thickening, or abnormal enhancement.

Large bowel: The colon and rectum are unremarkable in appearance.

Pelvis: There is no pelvic mass, free fluid, or lymphadenopathy identified.

Vascular structures: The aorta and its major branches appear normal. Wrap the entire output in JSON format.
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