Whole-body 18F-FDG PET/CT scan in a patient with Colon 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; a slightly high-density nodule measuring approximately 1.8*1.4cm was observed in the sellar region with increased FDG uptake (SUVmax = 20.7).
No widening was observed in the ventricles, sulci, fissures, or cisterns; local density and FDG uptake were normal; and there was no midline shift.
The bilateral eyeballs showed normal morphology and contours; retrobulbar structures were clear; the bilateral optic nerves were symmetrical; and FDG uptake was not significantly abnormal.
Post-nasal polyp surgery findings: Thickening of the bilateral ethmoid sinus and maxillary sinus mucosa, and part of the nasal mucosa.
No thickening of the nasopharyngeal wall was observed; FDG uptake was increased (SUVmax = 12.2); bilateral pharyngeal recesses were symmetrical; there was no stenosis of the Eustachian tube openings; the infratemporal fossa and pterygopalatine fossa structures were normal; the bilateral parapharyngeal spaces were clear; and FDG uptake was not abnormal.
The bilateral palatine tonsils were full and showed increased FDG uptake (SUVmax = 14.8).
The morphology and structure of the laryngopharynx are normal.
The thyroid gland is normal in shape and size, with uniform density, and FDG uptake is normal.
Multiple lymph nodes are seen in the bilateral deep cervical spaces and submandibular region, the largest with a short diameter of approximately 0.9 cm, some with increased FDG uptake (SUVmax = 6.4).
The thoracic cage is symmetrical, with clear lung markings.
Multiple small patchy, indistinct shadows are seen in both lungs, with unclear borders, more prominent in the upper lobes of both lungs.
Multiple ground-glass nodules with a long diameter of approximately 0.3-0.4 cm are seen in the apical segment of the right upper lobe, the apical-posterior segment of the left upper lobe, and the posterior-basal segment of the left lower lobe, with clear borders and normal FDG uptake.
Scattered punctate, solid nodular, and linear shadows are seen in both lungs, with normal FDG uptake.
The trachea is midline, and the trachea and the lumen of each lobe and segmental bronchus are patent.
No significantly enlarged lymph nodes are seen in the bilateral hilar and mediastinal regions, and FDG uptake is not significantly increased.
No pleural thickening is seen bilaterally, and there is no pleural effusion or pneumothorax bilaterally.
The cardiac silhouette was normal.
The esophagus showed no dilation, wall thickening, or mass; FDG uptake was normal.
The liver was normal in shape and size, with smooth borders and no widening of the hepatic fissure.
Multiple cystic lesions were observed in the liver parenchyma, the largest being approximately 1.0 cm in length in the left lobe; FDG uptake was normal.
A slightly low-density nodule, approximately 1.2 cm in length, with clear borders was observed under the capsule of the right lobe; FDG uptake was at background levels.
The main portal vein was normal in size; no dilation was observed in the intrahepatic or extrahepatic bile ducts.
The gallbladder showed a constricted waist shape in the middle segment, with slight thickening of the bladder wall at the base and patchy high-density shadows within; FDG uptake was normal.
The pancreas was normal in shape; no abnormal density shadows were observed in the parenchyma; the main pancreatic duct was normal in size; FDG uptake was normal.
The spleen was normal in shape and size; density and FDG uptake were normal.
The kidneys appeared normal in shape and size, with no obvious abnormal density shadows in the renal parenchyma, and no significant abnormalities in FDG uptake.
The renal pelvis, calyces, and ureters were not widened, and no positive stones were observed.
The adrenal glands appeared normal in shape and density, and FDG uptake was normal.
Gastric distension was poor, with increased FDG uptake in parts of the gastric wall and duodenal bulb (SUVmax = 5.4).
Bowel preparation was poor, with thickening of the intestinal wall at the junction of the descending colon and sigmoid colon, and increased FDG uptake (SUVmax = 29.5), with an uptake area of approximately 5.6*3.9cm.
The serosal surface and surrounding peritoneal spaces were slightly roughened.
Multiple small lymph nodes were observed in the mesentery surrounding the lesion and adjacent left pelvic wall, the largest with a short diameter of approximately 0.5cm, some with increased FDG uptake (SUVmax = 3.2).
Multiple additional lymph nodes were observed in the retroperitoneum and bilateral inguinal regions, the largest with a short diameter of approximately 0.7cm, with no abnormalities in FDG uptake.
No significant fluid accumulation was observed in the abdomen or pelvis.
The prostate gland appeared normal in shape and size, with a transverse diameter of approximately 4.7 cm.
No obvious abnormal density shadows were observed in the parenchyma, and FDG uptake was not significantly increased.
The bladder was poorly filled, but no obvious positive stones were observed.
The spinal alignment was normal, with some vertebral body margin osteophytes and L4/5 and L5/S1 intervertebral disc bulges.

Impression

1. a. Thickening of the intestinal wall at the junction of the descending colon and sigmoid colon with increased FDG metabolism suggests colon cancer; please refer to pathology reports. b. Metastasis to the mesenteric and adjacent left pelvic lymph nodes around the lesion is possible. Reactive hyperplasia of the retroperitoneal and bilateral inguinal lymph nodes is highly probable.

2. a. Several ground-glass nodules in the apical segment of the right upper lobe, the apical-posterior segment of the left upper lobe, and the posterior-basal segment of the left lower lobe, with normal FDG metabolism, suggest chronic inflammatory nodules or atypical adenomatous hyperplasia; please refer to annual follow-up HRCT. b. Scattered chronic inflammation and remnants in both lungs.

3. Slightly low-density nodule under the capsule of the right lobe of the liver, with background FDG uptake, suggests a possible hemangioma; ultrasound or MRI follow-up is recommended; multiple liver cysts. Septated gallbladder possible, cholecystitis with stones.

4. Chronic gastritis, chronic duodenal bulb inflammation.

5. Partial vertebral osteophyte formation. L4/5 and L5/S1 intervertebral disc bulging.

6. A mass in the sellar region with elevated FDG metabolism strongly suggests a pituitary tumor; a follow-up enhanced MRI of the pituitary gland is recommended.

7. Postoperative changes after nasal polyp surgery; chronic inflammation of the bilateral ethmoid sinuses, maxillary sinuses, and part of the nasal mucosa; and likely chronic inflammation of the nasopharynx and bilateral palatine tonsils. Specialist follow-up is recommended for all of the above. Bilateral reactive hyperplasia of cervical lymph nodes.

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