Whole-body 18F-FDG PET/CT scan in a patient with Liver Cancer taken from the PETWB-REP dataset. The following English report (translated from original Chinese) is taken verbatim from the public dataset and has not been modified or otherwise checked for accuracy (see the end for citation).

Findings

After fasting and intravenous injection of 18F-FDG, a whole-body PET/CT scan was performed.
The whole-body scan showed:Normal brain morphology and structure, with punctate low-density shadows in the deep bilateral cerebral regions; no significant abnormalities were observed in FDG uptake.
The ventricles, sulci, fissures, and cisterns were widened; the ventricles were symmetrical, and there was no midline shift.
The bilateral eyeballs were normal in shape and outline; the retrobulbar structures were clear; the bilateral optic nerves were symmetrical; no abnormal FDG uptake was observed.
The right maxillary sinus mucosa was slightly thickened with partial calcification; no abnormalities were observed in FDG uptake; the sinus wall was intact.
The nasopharyngeal wall was not thickened; the bilateral palatine tonsils were symmetrical; FDG uptake was physiological.
The laryngopharynx was normal in morphology and structure.
The bilateral parotid and submandibular glands were normal in morphology and density; FDG uptake was physiological.
The thyroid gland was normal in shape and size, with uniform density; no abnormalities were observed in FDG uptake.
Several small lymph nodes were observed in the bilateral deep cervical spaces and submandibular region, the largest measuring approximately 0.5 cm in short diameter.
Some lymph nodes showed increased FDG uptake (SUVmax = 4.7).
Increased translucency was observed in both lungs, with cystic lucent shadows seen in the subpleural region of the upper lobes.
The right middle lobe showed reduced volume, with patchy areas of increased density near the hilum of the right middle lobe, averaging 39 HU, and increased FDG uptake (SUVmax = 5.6).
Multiple solid nodules were observed in both lungs, some with high density and calcification.
The largest was located in the anterior segment of the right upper lobe, measuring approximately 1.0 cm in long diameter.
Some nodules showed mildly increased FDG uptake (SUVmax = 2.9).
A few linear shadows were observed in the remaining lungs, with normal FDG uptake.
Partial pleural thickening and calcification were observed bilaterally, with localized increased FDG uptake on the left side (SUVmax = 3.3).
No pleural effusion or pneumothorax was observed bilaterally.
Several lymph nodes were observed in the bilateral hilar and mediastinal areas (before the trachea and behind the vena cava, at the aortic window, and below the carina).
Some lymph nodes showed slightly increased density and calcification, with the largest measuring approximately 1.0 cm in short diameter.
FDG uptake was increased, with an SUVmax of 6.4.
No abnormalities were observed in the cardiac silhouette.
Calcification was observed in some arterial walls (including the coronary arteries).
No esophageal dilation, wall thickening, or mass was observed, and FDG uptake was not increased.
The liver margins were not smooth, and the hepatic fissures were not significantly widened.
A large, slightly low-density mass was observed in the lower segment of the right lobe of the liver on plain CT scan.
The largest mass measured approximately 9.7*6.8 cm in cross-section, with an average CT value of 45 HU.
The borders were indistinct, and FDG uptake was increased, with an SUVmax of 4.4 (hepatic blood pool SUVmax = 3.8).
A slightly low-density nodule was observed in the lower segment of the left lateral lobe of the liver, approximately 0.9 cm in long diameter, with relatively clear borders.
FDG uptake was decreased compared to background uptake.
A cystic low-density lesion, approximately 1.4 cm in long diameter, with clear borders and absent FDG uptake, was observed in the left medial lobe of the liver.
A nodular dense lesion was also seen in the diaphragmatic dome of the right lobe of the liver.
The main portal vein and its left and right branches were significantly thickened and increased in density, with increased FDG uptake (SUVmax = 4.9).
Lymph nodes were visible in the portacaval space, hepatogastric space, and retroperitoneum; the largest had a short diameter of approximately 1.1 cm and slightly increased FDG uptake (SUVmax = 2.9).
No significant fluid accumulation was observed in the abdominal or pelvic cavities.
The gallbladder was slightly distended, with no thickening of the gallbladder wall and no abnormalities in local FDG uptake.
The pancreas was normal in shape, with small nodular calcifications in the pancreatic body; the main pancreatic duct was not widened, and no significant abnormalities in FDG uptake were observed.
The spleen showed no abnormalities in shape, size, density, or FDG uptake.
Bilateral urinary system residual contrast agent is seen; the left kidney is reduced in size, with multiple cystic low-density shadows and slightly high-density nodules, the largest being approximately 0.9 cm in long diameter, with clear borders and absent FDG uptake; a fat-density nodule approximately 0.5 cm in long diameter is seen at the upper pole of the right kidney, with no abnormal FDG uptake.
No widening of the bilateral renal pelvis, calyces, or ureters is seen.
Bilateral adrenal gland contrast is normal, with no obvious abnormalities in FDG uptake.
Stomach is adequately distended, with no obvious thickening of the stomach wall, but some areas show increased FDG uptake (SUVmax = 3.9).
Intestinal distended is poor, with no obvious thickening or mass in the intestinal wall, and FDG uptake is physiological.
The prostate is slightly enlarged, approximately 4.9 cm in transverse diameter, with several calcifications within the parenchyma, and no abnormally increased FDG uptake.
Bladder is poorly distended, with residual contrast agent visible.
Scoliosis, unevenly decreased bone density, and osteophyte formation at the margins of some vertebral bodies.
L3/4 and L4/5 intervertebral disc bulges and calcifies, with a small amount of air accumulation in the L4/5 intervertebral disc.
FDG uptake is normal.

Impression

1. a. A large, slightly low-density mass in the lower segment of the right lobe of the liver, with increased FDG metabolism. Combined with enhanced MRI from our center, this is considered a malignant tumor, most likely hepatocellular carcinoma, with tumor thrombus formation in the main portal vein and its left and right branches. b. Possible metastasis to the hilar lymph nodes; reactive hyperplasia of the hepatogastric space and retroperitoneal lymph nodes, to be ruled out as mixed metastasis. Please follow up. c. A slightly low-density nodule in the lower segment of the left lateral lobe of the liver, with decreased FDG metabolism. Combined with enhanced MRI from our center, this is considered a hemangioma. A cyst in the left medial lobe of the liver. Calcification in the diaphragmatic dome of the right lobe of the liver.

2. a. Patchy areas of increased density near the hilum in the right middle lobe of the lung with increased FDG metabolism; multiple nodules in both lungs, some with increased FDG metabolism. Inflammatory lesions are considered possible. A space-occupying lesion in the right middle lobe of the lung is to be ruled out, and metastasis of some nodules is to be ruled out. Please closely monitor with clinical findings and CT scans. b. Chronic inflammatory lymph nodes in the bilateral hilar and mediastinal regions, pending metastasis; follow-up is required. Partial thickening and calcification of the bilateral pleura. c. A few post-inflammatory lesions in the remaining lungs, emphysema in both lungs. Calcification of some arterial walls (including coronary arteries).

3. Slightly distended gallbladder. Mild atrophy of the left kidney, multiple cysts in the left kidney (some complex). Small vascular leiomyolipomas in the upper pole of the right kidney. Benign prostatic hyperplasia with calcification.

4. Increased FDG metabolism in some gastric walls, likely due to chronic inflammation.

5. Osteoporosis. Scoliosis with degenerative changes. L3/4 and L4/5 intervertebral disc bulging and calcification, L4/5 intervertebral disc pneumoconiosis and degeneration.

6. Bilateral deep lacunar infarcts, age-related brain changes. Chronic inflammation of the right maxillary sinus. Reactive hyperplasia of the bilateral deep cervical spaces and submandibular lymph nodes.

This case is from PETWB-REP, a curated dataset of whole-body 18F-FDG PET/CT scans and corresponding radiology reports from 490 patients with a broad spectrum of malignancies. The data were retrospectively collected from patients who underwent clinically indicated whole-body 18F-FDG PET/CT scans at the Shanghai Universal Medical Imaging Diagnostic Center between 2021 and 2024.

License: Creative Commons Attribution 4.0 International (CC BY 4.0)

Citation:
Xue, L., Feng, G., Wenbo, Z., Zhang, Y., Li, L., Wang, S., Peng, L., Peng, S., & Gao, X. (2026). PETWB-REP: A Multi-Cancer Whole-Body FDG PET/CT Dataset with Corresponding Radiology Reports [Data set]. Zenodo. https://doi.org/10.5281/zenodo.18670487