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 scan showed: Normal brain morphology and structure; no abnormal density shadows were seen in the brain parenchyma; no significant abnormalities in FDG uptake were observed.
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 and showed no significant abnormalities.
No thickening of the paranasal sinus mucosa was observed; the sinus walls were intact.
No thickening of the nasopharyngeal wall was observed; no abnormalities in FDG uptake were observed; the pharyngeal recesses were symmetrical; there was no narrowing of the Eustachian tube openings; the infratemporal and pterygopalatine fossae were structurally normal; the parapharyngeal spaces were clear bilaterally, and no abnormalities in FDG uptake were observed.
The palatine tonsils showed physiological uptake bilaterally.
No abnormal density shadows were seen in the bilateral parotid and submandibular glands.
The morphology and structure of the laryngopharynx were normal.
The left lobe and isthmus of the thyroid gland showed widespread decreased density and increased FDG metabolism (SUVmax = 8.6); the right lobe was normal in shape and size, with uniform density, and no abnormalities in FDG uptake were observed.
Increased and disordered lung markings; thickening of the septa in the lower lobes of both lungs; diffuse linear and reticular density increases in both lungs, accompanied by multiple solid nodules and punctate foci; uneven FDG metabolism is increased, SUVmax=2.5.
Slight thickening of the pleura bilaterally; no pleural effusion or pneumothorax bilaterally.
No abnormalities were observed in the cardiac silhouette.
No esophageal dilation was observed; no significant thickening or mass was observed in the esophageal wall; no increased FDG uptake was observed.
Both breasts were normal; no abnormalities were observed in FDG metabolism.
The liver was normal in shape and size; the liver margins were smooth; the hepatic fissure was not widened; a small cystic lesion, approximately 0.4 cm in long diameter, was observed between the left and right lobes of the liver; FDG uptake was absent.
A low-density shadow was observed in the lower segment of the right posterior lobe of the liver; no abnormalities were observed in FDG uptake.
No significant widening of the main portal vein was observed; no dilation was observed in the intrahepatic or extrahepatic bile ducts.
The gallbladder was normal in shape and size; the gallbladder wall was slightly thickened; no abnormalities were observed in local FDG uptake.
Fatty infiltration of the pancreatic head; no obvious abnormal density shadows were seen in the remaining pancreas; no widening of the main pancreatic duct was observed; and FDG uptake was not significantly abnormal.
The spleen showed no abnormalities in morphology, size, density, or FDG uptake.
Both kidneys were normal in morphology and size; no obvious abnormal density shadows were seen in the parenchyma; no widening of the renal pelvis, calyces, or ureters was observed; and FDG uptake was not significantly abnormal.
Bilateral adrenal glands showed no obvious abnormalities on contrast.
The stomach was poorly distended; no obvious thickening of the gastric wall was observed; and FDG uptake was not significantly abnormal.
The uterus was full in shape with an irregular outline; and FDG uptake was not abnormally increased.
The bladder was generally distended; no obvious positive stones were observed.
A cystic lesion measuring approximately 4.3 2.7 cm was seen on the right pelvic wall; FDG metabolism was not abnormal.
The spinal alignment was normal; some vertebral bodies showed marginal osteophyte formation; and L4/5 and L5/S1 intervertebral disc bulges were observed.
Post-rectal cancer surgery, metallic suture shadows were seen in the surgical area; the anastomotic wall was slightly thickened; and FDG metabolism was not abnormal.
Slight thickening of the omentum and mesentery in the abdominopelvic cavity was observed, with no abnormal FDG uptake.
Multiple enlarged lymph nodes were seen in the left deep cervical space, left submandibular region, left posterior cervical triangle, bilateral supraclavicular fossa, bilateral axillae, bilateral hilum, right superior mediastinum, pretracheal vena cava, aortopulmonary window, subcarinal region, prediaphragmatic group, portal vena cava space, para-aortic region, perimesenteric region, bilateral iliac vessels, and left pelvic wall.
The largest lymph node had a short diameter of approximately 1.9 cm, with increased FDG metabolism (SUVmax = 7.3).
Decreased bone density was observed in the bilateral scapulae, multiple bilateral ribs, multiple vertebral bodies and appendages of the spine, and bilateral iliac bones, with increased FDG metabolism (SUVmax = 5.6).

Impression

1. a. Post-rectal cancer surgery, slight thickening of the anastomotic wall, no abnormalities in FDG metabolism, suggesting post-operative changes are highly likely; colonoscopy follow-up is recommended. b. Multiple enlarged lymph nodes throughout the body, multiple areas of decreased bone density, all with increased FDG metabolism, suggest malignancy, with a high probability of metastasis; further investigation based on clinical treatment and pathology is recommended to rule out other possibilities. c. Cystic lesion on the right pelvic wall, no abnormalities in FDG metabolism, suggesting a high probability of lymphangiocysts; follow-up examination is recommended to rule out metastasis. d. Slight thickening of the omentum mesentery in the abdominopelvic cavity, no abnormal FDG uptake; follow-up examination is recommended.

2. Diffuse lesions in both lungs, unevenly increased FDG metabolism, suggesting possible interstitial inflammation, with partial metastasis to be ruled out; CT scan for comparison is recommended. Slight thickening of both pleura.

3. Widespread decreased density in the left lobe and isthmus of the thyroid gland, with increased FDG metabolism, suggesting possible inflammatory uptake; ultrasound and laboratory tests are recommended to rule out space-occupying lesions.

4. Small liver cysts; possible hepatic hemangioma. Chronic cholecystitis. Uterine fibroids.

5. Degenerative changes in the spine. L4/5 and L5/S1 intervertebral disc bulges.

6. No abnormalities were found on cranial scintigraphy.

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