Whole-body 18F-FDG PET/CT scan in a patient with Rectal 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, and resting, a whole-body PET/CT scan was performed.
The whole-body scan showed: The brain morphology and structure were normal, with no abnormal density shadows in the brain parenchyma, and no significant abnormalities in FDG uptake.
No widening of the ventricles, sulci, fissures, or cisterns was observed; the ventricles were symmetrical, and there was no midline shift.
The eyeballs were symmetrical, with no significant abnormalities.
The ethmoid and maxillary sinus mucosa was slightly thickened bilaterally, with intact sinus walls.
The nasopharyngeal wall was not thickened, and FDG uptake was normal.
The pharyngeal recesses were symmetrical, the Eustachian tube openings were not narrowed, the infratemporal and pterygopalatine fossae were structurally normal, and the bilateral parapharyngeal spaces were clear with no abnormal FDG uptake.
The palatine tonsils showed physiological uptake.
The laryngopharynx morphology and structure were normal.
No abnormal density shadows were observed in the bilateral parotid and submandibular glands.
The thyroid gland is normal in shape and size, with uniform density, and FDG uptake is normal.
No significantly enlarged lymph nodes were observed in the bilateral deep cervical spaces, submandibular region, and submental region; FDG metabolism was normal.
A small ground-glass nodule with relatively clear borders, approximately 0.3 cm in long diameter, is visible in the lateral segment of the right middle lobe; FDG metabolism is normal.
Multiple solid nodules are also observed in both lungs, the largest being approximately 0.3 cm in long diameter.
A small, round, dense shadow is visible in the lateral basal segment of the left lower lobe; FDG uptake is normal.
A few linear shadows are also seen in both lungs; FDG metabolism is normal.
No pleural thickening or pleural effusion/pneumothorax is observed bilaterally.
No significantly enlarged lymph nodes are observed in the bilateral hilar and mediastinal regions.
Calcification is visible in the coronary artery walls.
No esophageal dilation, significant wall thickening, or mass is observed; FDG uptake is normal.
The liver appears normal in shape and size, with smooth borders and no widening of the hepatic fissure.
Several slightly low-density nodules with relatively clear borders are visible in the left lateral lobe and right anterior lobe of the liver.
The largest nodule is located in the right anterior lobe, measuring approximately 1.7 1.1 cm, with a CT value of approximately 41 HU.
FDG uptake is normal.
The main portal vein is not significantly widened, and no dilation of intrahepatic or extrahepatic bile ducts is observed.
The gallbladder appears normal in shape and size, with no thickening of the gallbladder wall.
Local FDG uptake is normal.
The pancreas appears normal in shape, with no obvious abnormal density shadows in the parenchyma.
The main pancreatic duct is not widened, and FDG uptake is normal.
Multiple slightly low-density nodules are seen in the spleen, with relatively clear borders.
The largest nodule has a long diameter of approximately 0.9 cm and a CT value of approximately 31 HU.
FDG uptake is normal.
A high-density nodule, approximately 0.3 cm in long diameter, is visible in the right kidney.
FDG metabolism is normal.
The left kidney is normal in shape and size, with no obvious abnormal density shadows in the parenchyma.
The renal pelvis, calyces, and ureter are not widened, and FDG uptake is normal.
Bilateral adrenal gland imaging is normal.
The stomach is poorly filled, with no obvious thickening of the stomach wall.
FDG uptake is normal.
The posterior wall of the upper rectum is thickened, with the thickest point approximately 0.9 cm.
A nodular protrusion (approximately 1.3 1.4 cm in cross-section) is observed on the right posterior wall.
FDG metabolism is increased, with SUVmax = 9.1.
No enlarged lymph nodes are seen in the perirectal spaces, and FDG metabolism is normal.
The prostate is of acceptable shape, with punctate dense shadows visible.
FDG uptake is normal.
The bladder is generally full, with no obvious positive stones.
No enlarged lymph nodes were observed in the abdomen, pelvis, or retroperitoneal region.
FDG metabolism was normal.
A small amount of hydrocele was observed bilaterally.
The spinal alignment was normal, with osteophyte formation at the margins of some vertebral bodies and a bulging L4/5 intervertebral disc.
FDG uptake was normal.
Dense nodular shadows were observed in multiple vertebral bodies and their appendages, the right 6th posterior rib, and the left iliac crest.
FDG metabolism was normal.

Impression

1. Mass in the upper rectum, elevated FDG metabolism, suggestive of rectal cancer; please confirm with pathology.

2. a. Ground-glass nodule in the lateral segment of the right middle lobe, normal FDG metabolism, suggestive of atypical adenomatous hyperplasia or inflammatory nodule; annual HRCT follow-up recommended. b. Multiple chronic inflammatory micronodules in both lungs, calcification in the lateral basal segment of the left lower lobe, and a few fibrotic lesions in both lungs. Partial calcification of the coronary artery wall.

3. Slightly low-density nodules in the left lateral lobe and right anterior lobe of the liver, normal FDG metabolism, suggestive of hemangioma; multiple slightly low-density nodules in the spleen, normal FDG metabolism, suggestive of vascular malformation. Further examination with contrast-enhanced MRI is recommended for all of the above.

4. Complex small cyst in the right kidney. Calcification in the prostate. Small amount of hydrocele in both testes.

5. Spinal osteophyte formation, L4/5 disc bulge. Multiple vertebral bodies and appendages, right 6th posterior rib, and left iliac bone are highly suggestive of benign bone disease; please follow up.

6. Cranial imaging showed no obvious abnormalities. Bilateral ethmoid and maxillary sinusitis.

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