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, and resting, a whole-body PET/CT scan was performed.
The whole-body scan showed: A cystic-solid lesion measuring approximately 6.8*4.3cm was observed in the right posterior parietal lobe.
Within the lesion, near the falx cerebri, a mixed-density mural nodule measuring approximately 1.0*0.8cm was seen, surrounded by linear high-density shadows.
FDG metabolism was increased (SUVmax = 4.7).
The corresponding parietal bone showed expansile osteogenic changes, with slightly increased FDG metabolism (SUVmax = 2.8).
Punctate low-density lesions were seen in the deep bilateral cerebral regions, with no significant abnormalities in FDG uptake.
The ventricles, cisterns, and sulci were slightly enlarged, and localized calcification was observed in the falx cerebri.
Localized bone destruction was observed in the occipital bone, with increased FDG metabolism (SUVmax = 3.8).
The bilateral eyeballs showed normal morphology and contours, clear retrobulbar structures, and symmetrical optic nerves, with no abnormal FDG uptake.
Slight thickening of the mucosa in parts of the bilateral ethmoid sinuses and right maxillary sinus, with some cystic changes; sinus walls intact; FDG uptake absent.
No thickening of the nasopharyngeal wall; symmetrical palatine tonsils bilaterally; FDG uptake physiologically.
No abnormalities in the morphology and structure of the laryngopharynx.
Normal morphology and density of the bilateral parotid and submandibular glands; FDG uptake physiologically.
Increased FDG metabolism in the right upper alveolar region; SUVmax = 7.0.
Uneven density in both lobes of the thyroid gland; FDG uptake normal.
No obvious large lymph nodes in the bilateral deep cervical spaces, submandibular region, or submental region.
A small nodule with a long diameter of approximately 0.4 cm is seen in the posterior segment of the right lower lobe; FDG metabolism normal.
A patchy linear opacity with calcifications is seen in the posterior segment of the left upper lobe; a few other linear and flocculent density shadows are seen in both lungs; FDG uptake normal.
Localized pleural thickening with calcification in the left lung apex.
No pleural effusion or pneumothorax bilaterally.
Small lymph nodes in the bilateral hilar and mediastinal (pretracheal, post-vena cava) regions are visible, the largest being approximately 0.4 cm in short diameter, with slightly increased FDG metabolism (SUVmax = 2.5).
Calcified lymph nodes in the bilateral hilar regions are also present.
Cardiac findings are normal.
Calcification of some arterial walls (including coronary arteries) is present.
The esophagus is not dilated, and the wall is not significantly thickened or swollen; FDG uptake is not increased.
A slightly dense nodular lesion, approximately 1.6*1.2 cm in cross-section, with relatively clear borders, is seen in the lower outer quadrant of the left breast; FDG metabolism is slightly increased (SUVmax = 1.6).
No obvious mass or nodule is seen in the right breast; punctate slightly high-density lesions are present within the right breast; FDG metabolism is not significantly abnormal.
Small lymph nodes in the left axilla are visible, the largest being approximately 0.5 cm in short diameter; FDG metabolism is not significantly abnormal.
A slightly low-density mass is observed in the right lobe of the liver, measuring approximately 12.3*9.7cm in cross-section, with indistinct borders.
FDG uptake shows a ring-like increase, with SUVmax=11.8.
A mixed-density mass is also observed in the left lobe of the liver, containing a high-density shadow, with indistinct borders, measuring approximately 6.8*6.2cm in cross-section.
FDG uptake is unevenly increased, with SUVmax=18.7.
Several low-density nodules are also observed within the liver parenchyma, the largest located in the left medial lobe, with smooth margins and a long axis of approximately 5.5cm, showing absent FDG uptake.
No significant widening of the main portal vein is observed, and no dilation of intrahepatic or extrahepatic bile ducts is seen.
A slightly high-density shadow is filled within the gallbladder lumen, with slight thickening of the gallbladder fundus wall.
FDG uptake is normal.
The pancreas appears to have a slightly increased FDG uptake foci in the pancreatic tail, with SUVmax=1.9.
The main pancreatic duct is not widened.
Spleen morphology, size, density, and FDG uptake were normal.
Both kidneys were normal in shape and size, with cystic low-density lesions within the parenchyma; the largest was located in the right kidney, measuring approximately 3.5*2.5cm in cross-section, with absent FDG metabolism.
Punctate dense shadows were seen within both renal calyces; no widening of the renal pelvis, calyces, or ureters was observed, and FDG uptake was not significantly abnormal.
A roundish low-density lesion was seen in the inner branch of the left adrenal gland, with a CT value of approximately 15 HU, a cross-sectional size of approximately 1.6*1.4cm, indistinct borders, and increased FDG metabolism (SUVmax=2.9).
No significant abnormalities were observed in the right adrenal gland.
Stomach distension was poor, with slight thickening of the antral wall and mildly increased FDG uptake (SUVmax=2.8).
Following sigmoid colon cancer surgery, high-density suture shadows were observed in the surgical area, with poor intestinal distension and increased local FDG metabolism (SUVmax = 8.0).
Increased FDG uptake was also observed in some segments of the remaining colon (SUVmax = 7.4).
Focal increased FDG uptake was also observed in the anal region (SUVmax = 13.0).
The uterus was normal in shape and size, with no abnormal density shadows and normal FDG uptake.
No obvious abnormalities were observed in the bilateral adnexa.
The bladder was poorly distended, but no obvious positive stones were observed.
No enlarged lymph nodes were observed in the abdomen, pelvis, or retroperitoneum.
No significant fluid accumulation was observed in the abdominal or pelvic cavities.
Small inguinal lymph nodes were visible bilaterally, the largest with a short diameter of approximately 0.6 cm; FDG metabolism was not significantly abnormal.
The spinal alignment was normal, with calcification of the nuchal ligament and osteophyte formation at the margins of some vertebral bodies.
L4/5 and L5/S1 intervertebral disc bulges, FDG uptake shows no abnormalities.
L2 vertebral body is slightly displaced posteriorly.
L3-4 vertebral body is slightly displaced anteriorly.
L1/2, L2/3 and L4/5 intervertebral discs show pneumatosis and degeneration.
Dense shadow is present in the right iliac bone.

Impression

1. a. Increased FDG metabolism in the surgical area after sigmoid colon cancer surgery, likely due to inflammatory uptake. Colonoscopy is recommended to rule out recurrence. Increased FDG metabolism in parts of the stomach wall and intestines, possibly due to physiological uptake or chronic inflammation. Hemorrhoids. b. A cystic-solid lesion in the right posterior parietal lobe with increased FDG metabolism in the solid portion, likely due to brain metastasis with edema; enhanced MRI is recommended. Metastasis to the right parietal and occipital bones is also possible. c. Liver metastasis. Possible left adrenal metastasis. High FDG metabolism in the pancreatic tail, metastasis to be ruled out.

2. Slightly dense nodule in the lower outer quadrant of the left breast, with increased FDG metabolism, possibly a fibroadenoma, but malignancy to be ruled out; enhanced MRI is recommended. Dense lesion in the right breast. Reactive hyperplasia of the left axillary lymph nodes.

3. A small, chronic inflammatory nodule in the posterior segment of the right lower lobe is likely large; CT follow-up is recommended to rule out other possibilities. Old lesions in the posterior segment of the left upper lobe. Localized pleural thickening with calcification in the left apex. Scattered chronic inflammation and remnants in both lungs. Reactive hyperplasia of the hilar and mediastinal lymph nodes bilaterally. Calcified hilar lymph nodes bilaterally. Partial arteriosclerosis (including coronary arteries).

4. Liver cysts. Possible gallbladder fundus adenomyoma, bile concentration. Bilateral renal cysts, bilateral renal stones. Reactive hyperplasia of the bilateral inguinal lymph nodes.

5. Degenerative changes in the spine. L4/5 and L5/S1 intervertebral disc bulges. L2 vertebral instability. Mild anterior slippage of the L3-4 vertebral bodies. Pneumatosis and degeneration of the L1/2, L2/3, and L4/5 intervertebral discs. Right iliac bone island.

6. The density of both lobes of the thyroid gland is uneven, suggesting nodular goiter. Ultrasound follow-up is recommended.

7. Age-related brain changes: deep lacunar infarcts. Localized calcification of the falx cerebri. Minor inflammation of the right maxillary sinus, bilateral ethmoid sinus submucosal cysts. Right superior alveolar ulceritis.

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