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, a whole-body PET/CT scan was performed.
The whole-body images showed: Normal brain morphology and structure, with a few patchy low-density shadows in the deep brain regions; no significant abnormalities were observed in FDG uptake.
Enlargement of the ventricles, sulci, fissures, and cisterns was observed; the ventricles were symmetrical bilaterally, and there was no midline shift.
The eyeballs were symmetrical bilaterally, with no significant abnormalities.
No thickening of the paranasal sinus mucosa was observed, and the sinus walls were intact.
No thickening of the nasopharyngeal wall was observed; no abnormalities were observed in FDG uptake.
The pharyngeal recesses were symmetrical bilaterally, and there was no narrowing of the Eustachian tube openings.
The infratemporal and pterygopalatine fossae were structurally normal, and the bilateral parapharyngeal spaces were clear; no abnormalities were observed in FDG uptake.
The palatine tonsils showed physiological uptake bilaterally.
No abnormal density shadows were observed in the bilateral parotid and submandibular glands.
The laryngopharynx was normal in morphology and structure.
The thyroid gland was normal in morphology and size, with slightly uneven density; no abnormalities were observed in FDG uptake.
Multiple lymph nodes were observed in the left upper cervical deep space and left supraclavicular region, the largest measuring approximately 1.2 cm in short diameter, with increased FDG metabolism (SUVmax = 12.2).
Multiple solid nodules were observed in both lungs, with clear borders, the largest measuring approximately 2.6 cm in long diameter, with increased FDG metabolism (SUVmax = 13.2).
Multiple bronchiectasis was observed in both lungs, more prominent in the left lower lobe.
No pleural thickening was observed bilaterally, and there was no pleural effusion or pneumothorax.
No significantly enlarged lymph nodes were observed in the bilateral hilar and mediastinal regions.
The cardiac silhouette was normal.
The esophagus was not dilated, and the esophageal wall showed no significant thickening or mass; FDG uptake was not increased.
No significant abnormalities were observed in either breast, and FDG metabolism was normal.
The liver showed no significant abnormalities in shape or size, with smooth borders, no widening of the hepatic fissure, and no significant abnormal density shadows in the liver parenchyma on plain CT scan; FDG uptake was normal.
The main portal vein was not significantly widened, and no dilation of intrahepatic or extrahepatic bile ducts was observed.
The gallbladder showed no abnormalities in shape or size, but increased density within the gallbladder.
The gallbladder wall was not thickened, and local FDG uptake was normal.
The pancreas showed fatty infiltration, but the main pancreatic duct was not widened, and FDG uptake was not significantly abnormal.
The spleen showed no abnormalities in shape, size, density, or FDG uptake.
Multiple enlarged lymph nodes were present in the retroperitoneum and right posterior diaphragmatic crura, the largest with a short diameter of approximately 2.0 cm.
FDG metabolism was increased, with an SUVmax of 12.4.
The upper and middle segments of the left ureter were involved, with dilation and effusion in the left renal pelvis and upper ureter.
The left kidney was atrophied, and a slightly low-density nodule measuring 2.0*2.0 cm was seen at the lower pole of the left kidney, with mild FDG uptake (SUVmax = 2.8).
The right kidney showed compensatory slight enlargement, with no significant abnormal density shadows in the parenchyma.
The renal pelvis, calyces, and ureter were not widened, and FDG uptake was not significantly abnormal.
Bilateral adrenal gland imaging showed no significant abnormalities.
The stomach was poorly distended, with no significant thickening of the gastric wall, and FDG uptake was not significantly abnormal.
Intestinal distension was poor.
Post-rectal cancer surgery, FDG metabolism was increased in the lower rectum to the anal canal, SUVmax=9.0.
The uterus was normal in shape, with no abnormal density shadows, and no abnormally increased FDG uptake was observed.
No abnormal FDG metabolism was observed in the bilateral adnexa.
The bladder was generally full, with no obvious positive stones.
No obvious fluid accumulation was observed in the abdomen or pelvis.
The spinal alignment was normal, with some vertebral marginal osteophytes.
Systemic bone marrow FDG metabolism was normal.

Impression

1. a. Post-rectal cancer surgery, increased FDG metabolism in the lower rectum to anal canal suggests possible inflammatory uptake; tumor recurrence needs to be ruled out. Please have a follow-up colonoscopy. b. Retroperitoneal and right posterior diaphragmatic lymph node metastasis, involving the upper and middle segments of the left ureter, dilation and effusion of the left renal pelvis and upper ureter, and left kidney atrophy. The right kidney shows compensatory slight enlargement. c. Metastasis to the left upper cervical deep space and left supraclavicular lymph nodes. d. Multiple metastatic tumors in both lungs. Multiple bronchiectasis in both lungs, predominantly in the lower lobe of the left lung.

2. Possible mass in the lower part of the left kidney; enhanced MRI is recommended.

3. A few ischemic lesions deep in the brain, senile cerebral changes.

4. Cholestasis in the gallbladder. Fatty infiltration of the pancreas.

5. Osteophyte formation in some vertebrae.

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