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: Brain morphology and structure were normal, with punctate, slightly low-density shadows in the deep brain regions; FDG metabolism was normal.
The ventricles, sulci, fissures, and cisterns were widened, but local density and FDG uptake were normal; there was no midline shift.
Both eyes were symmetrical, with no obvious abnormalities.
The paranasal sinuses showed no thickening of the mucosa, and the sinus walls were intact.
The nasopharyngeal wall showed no thickening, 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.
No abnormal density shadows were seen in the bilateral parotid and submandibular glands.
The oropharynx and laryngopharynx showed no abnormalities in morphology and structure.
Thyroid gland is normal in shape and size, with uneven density.
A calcification lesion, approximately 0.5 cm in diameter, is present in the left lobe.
FDG uptake is normal.
No enlarged lymph nodes are seen in the bilateral deep cervical spaces or submandibular region.
Lung markings are clear.
Several solid nodules with clear borders are present in both lungs, the largest approximately 0.3 cm in diameter.
FDG uptake is normal.
Patchy and linear lesions are present in the lower lobes of both lungs, more prominent in the right lower lobe, with increased FDG uptake (SUVmax = 2.7).
Right-sided pleural effusion is present.
Multiple lymph nodes are seen in the bilateral hilar regions, pretracheal spaces, para-aortic arch, aortopulmonary window, and subcarinal region, the largest approximately 0.7 cm in short diameter, with increased FDG uptake (SUVmax = 3.3).
The cardiac silhouette is normal, with cardiac chamber density slightly lower than myocardial density.
Calcification is present in some arterial walls (including coronary arteries).
No abnormal density shadows were seen in either breast, and FDG metabolism was normal.
No esophageal dilation was seen, and no significant thickening or mass was seen in the esophageal wall; FDG uptake was not increased.
The liver morphology and size were normal, the liver margins were smooth, the hepatic fissure was not widened, and no significant abnormal density shadows were seen in the liver parenchyma on plain CT scan; FDG uptake was normal.
The main portal vein was not significantly widened, and the intrahepatic bile ducts were slightly widened.
The gallbladder was absent.
The pancreas was normal in morphology, and no significant abnormal density shadows were seen in the parenchyma; the main pancreatic duct was not widened, and FDG uptake was normal.
The spleen morphology, size, density, and FDG uptake were normal.
A soft tissue density nodule adjacent to the spleen, approximately 1.0 cm in diameter, was observed; FDG uptake was normal.
Both kidneys are normal in shape and size, with several cystic lesions in the renal parenchyma, the largest being located at the lower pole of the left kidney, approximately 1.4 cm in diameter.
FDG metabolism is normal.
There is no widening of the renal pelvis, calyces, or ureter, and no significant abnormalities in FDG uptake.
The left adrenal gland is thickened with increased FDG uptake, SUVmax=2.3.
The right adrenal gland shows no significant abnormalities on contrast imaging.
The stomach is poorly distended, with slight thickening of the antral wall and mildly increased FDG uptake, SUVmax=2.5.
The mid-rectum shows irregular thickening of the intestinal wall with the formation of a soft tissue mass, increased FDG uptake, SUVmax=19.5, measuring approximately 4.8*5.1*5.7 cm.
The intestinal lumen is narrowed, the adventitia is rough, and there is considerable exudation in the surrounding fat spaces.
Presacral lymph nodes are visible, the largest being approximately 0.5 cm in short diameter, with slightly increased FDG uptake, SUVmax=2.5.
Uterus absent.
No obvious abnormalities seen in the bilateral adnexa.
Bladder poorly filled, no obvious positive stones seen.
Decreased bone density throughout the body, scoliosis, osteophyte formation at the margins of some vertebral bodies, multiple lumbar disc bulges with pneumoconiosis and degeneration.
L4 vertebral body posteriorly displaced, C3-6 vertebral bodies under internal metal fixation.
Bilateral knee joint degeneration, increased peripheral FDG uptake, SUVmax=2.1, more pronounced on the right side.
No other abnormalities seen on imaging of the lower extremities.
No abnormalities seen in bone marrow FDG metabolism throughout the body.

Impression

1. A mass in the mid-rectum with elevated FDG metabolism, suggestive of colorectal cancer involving the adventitia; please confirm with pathology. Presacral lymph node metastasis is pending; follow-up is recommended.

2. Chronic inflammatory micronodules in both lungs; CT follow-up is recommended. Chronic inflammation and sequelae in both lungs. Right-sided pleural effusion. Reactive hyperplasia of hilar and mediastinal lymph nodes in both lungs. Mild anemia; partial calcification of arterial walls (including coronary arteries).

3. Postoperative changes after gallbladder and uterine surgery. Accessory spleen. Left adrenal hyperplasia. Bilateral renal cysts.

4. Chronic inflammatory changes in the gastric antrum; please confirm with endoscopy.

5. Osteoporosis, scoliosis, degenerative changes in the spine, multiple lumbar disc bulges with pneumoconiosis, mild posterior slippage of the L4 vertebra. Postoperative changes after cervical spine surgery. Bilateral knee joint degeneration with inflammation.

6. Calcification in the left lobe of the thyroid gland; ultrasound follow-up is recommended.

7. Age-related brain changes; deep lacunar infarcts; MRI follow-up is recommended.

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