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, or submental region, and FDG metabolism was normal.
A small air-filled sac is visible next to the right trachea.
The right middle lobe is atelectasised, presenting as a soft tissue mass approximately 7.4 5.2 cm in size, with indistinct borders from the hilar structures.
FDG metabolism is increased, with SUVmax = 7.5.
Soft tissue masses are also observed in the apical-posterior segment of the left upper lobe and the lateral basal segment of the right lower lobe, measuring approximately 6.2 4.8 cm and 4.2 3.3 cm respectively, with relatively clear, lobulated margins.
FDG metabolism is increased, with SUVmax = 6.9, and a few linear shadows are seen around the masses.
Multiple small nodules are also observed in both lungs, the largest being approximately 0.3 cm in long diameter, with FDG uptake normal.
No pleural thickening was observed bilaterally, and there was no pleural effusion or pneumothorax bilaterally.
Lymph nodes were observed bilaterally in the hilum and mediastinum, the largest with a short diameter of approximately 1.2 cm, showing increased FDG metabolism (SUVmax = 10.9).
The cardiac silhouette appeared normal.
The esophagus showed no dilation, no significant thickening or mass in the esophageal wall, and no increased FDG uptake.
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 showed no significant widening, and no dilation of intrahepatic or extrahepatic bile ducts was observed.
The gallbladder showed no abnormalities in shape or size, no thickening of the gallbladder wall, and no abnormal local FDG uptake.
The pancreas was normal in shape, with no significant abnormal density shadows in the parenchyma, no widening of the main pancreatic duct, and no significant abnormal FDG uptake.
Spleen morphology, size, density, and FDG uptake were normal.
A small splenic nodule was observed around the spleen; FDG metabolism was normal.
A small cystic lesion, approximately 0.5 cm in long diameter, was observed in the right kidney, along with a slightly higher density nodule; FDG metabolism was normal.
The left kidney was normal in shape and size, with no obvious abnormal density shadows in the parenchyma.
The renal pelvis, calyces, and ureter were not widened; FDG uptake was normal.
The left adrenal gland showed no obvious abnormalities on contrast.
The right adrenal gland was thickened, with the thickest point approximately 0.4 cm; FDG metabolism was increased, SUVmax = 3.8.
Stomach distension was poor; the stomach wall was not significantly thickened; FDG uptake was normal.
Post-rectal cancer surgery and chemotherapy, a high-density anastomosis device shadow was observed in the surgical area; FDG uptake was normal.
The prostate was normal in size and density; FDG uptake was not abnormally increased.
The bladder is generally full, with no obvious positive stones observed.
No enlarged lymph nodes were seen in the abdomen, pelvis, or retroperitoneal region; FDG metabolism was normal.
A small amount of fluid-density shadow with calcifications was observed in the tunica vaginalis of the left testis.
The spinal alignment was normal, with osteophyte formation at the margins of some vertebral bodies, L4/5 and L5/S1 intervertebral disc bulging, and nodular low-density shadows at the anterolateral margins of both femoral heads; FDG uptake was normal.
No abnormal FDG metabolism was observed in the entire skeleton.

Impression

1. a. Post-rectal cancer surgery and chemotherapy, no obvious signs of tumor recurrence were observed at the anastomosis. Multiple lesions with increased FDG uptake in the right middle and lower lobes and left upper lobe, suggestive of malignancy, with a high probability of metastasis, and some lung cancer to be ruled out, along with right middle lobe atelectasis. b. Multiple small nodules in both lungs, FDG metabolism normal, some metastasis to be ruled out, CT follow-up recommended. Bilateral hilar and mediastinal lymph node metastasis to be ruled out. Right paratracheal diverticulum. c. Enlargement of the right adrenal gland with increased FDG metabolism, suggestive of metastasis, CT follow-up recommended.

2. Accessory spleen. Right renal cyst (one complex). Small amount of hydrocele with calcification in the left testicular tunica vaginalis.

3. Spinal osteophyte formation. L4/5 and L5/S1 intervertebral disc bulge. Bilateral femoral head herniation.

4. No obvious abnormalities were found on cranial imaging. Minor inflammation was observed in both ethmoid and maxillary sinuses.

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