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 abnormal FDG uptake.
No widening of the ventricles, sulci, fissures, or cisterns was observed, with no abnormalities in local density or FDG uptake, and no midline shift.
The morphology and outline of both eyeballs were normal, the retrobulbar structures were clear, and FDG uptake was normal.
No thickening of the paranasal sinus mucosa was observed, and the sinus walls were intact.
A linear dense shadow was seen in the left parapharyngeal space, not connected to the styloid process; the soft tissue of the adjacent left oropharyngeal wall was slightly thickened, with increased FDG uptake (SUVmax = 5.2).
No significant thickening of the soft tissue of the lateral nasopharyngeal walls was observed; the bilateral pharyngeal recesses were symmetrical, and FDG uptake was normal.
The morphology and structure of the laryngopharynx were normal, and the parapharyngeal space was clear.
The parotid and submandibular glands were normal in size, shape, and density, and FDG uptake was physiological.
The thyroid gland was normal in shape and size, but its density was slightly uneven; FDG uptake was normal.
No significantly enlarged lymph nodes were observed in the bilateral deep cervical spaces, submandibular region, and submental region; FDG uptake was normal.
Several solid miliary lesions and small nodular lesions were observed in both lungs, the largest being located in the right oblique fissure, with a long diameter of approximately 0.5 cm and clear borders; FDG uptake was normal.
Scattered patchy and linear shadows were observed in both lungs, some of which were ground-glass opacities, most notably near the lesion on the 4th rib in the middle and lower lobes of the right lung; FDG uptake was increased, SUVmax = 2.5.
Slight pleural thickening was observed in some areas; no significant pleural effusion was observed bilaterally.
No significantly enlarged lymph nodes were observed in the bilateral hilar and mediastinal regions; FDG uptake was not significantly increased.
The heart size was normal.
The superior vena cava is currently catheterized.
The liver size is normal, with smooth margins and no widening of the hepatic fissure.
The capsule of the right lobe of the liver is wrinkled, containing low-density nodules and masses with indistinct borders; the largest is approximately 3.3 cm in length.
FDG uptake is partially at background levels and partially decreased.
A low-density nodule with an indistinct border and increased FDG uptake (SUVmax = 6.4, SUVmax = 4.5 after delayed scanning) is seen in the left lateral lobe of the liver.
Localized FDG uptake is increased in the caudate lobe of the liver (SUVmax = 4.3), decreasing to background levels after delayed scanning.
No dilation of intrahepatic or extrahepatic bile ducts is observed.
The gallbladder is normal in shape and size, with no thickening of the gallbladder wall, no positive stones or obvious masses, and normal FDG uptake in the gallbladder fossa.
The peripancreatic spaces are clear, with no obvious abnormal density shadows seen in the parenchyma.
The pancreatic duct is not widened, and FDG uptake is normal.
The spleen is enlarged, with no obvious abnormal density shadows seen.
FDG uptake is slightly increased, with SUVmax=3.6 (liver SUVmax=2.9).
The bilateral adrenal glands are normal in shape, size, and density, with no abnormal local FDG uptake.
Both kidneys are normal in shape and size.
A small, round, low-density lesion approximately 0.9 cm in diameter is seen in the upper part of the right kidney, with decreased FDG uptake.
No obvious abnormal density shadows are seen in the left renal parenchyma, and FDG uptake is normal.
No widening of the renal pelvis, calyces, or ureters is seen bilaterally, and no positive stones are seen locally.
The prostate is normal in shape and size, and no focal abnormal increase in FDG uptake is seen.
The bladder is not full.
No esophageal dilation, no obvious thickening or mass in the esophageal wall, and no increased FDG uptake.
Gastric fullness is adequate; the mucosal folds on the greater curvature of the gastric body are slightly thickened, and the gastric wall in the antrum is slightly thickened; FDG uptake is normal.
Post-rectal cancer treatment: Slight thickening of the rectal wall in the local area, clear surrounding fat spaces, no enlarged lymph nodes, and no abnormal FDG uptake.
The remaining intestinal fullness is unsatisfactory; no local mass is seen, and FDG uptake is normal.
Multiple small lymph nodes are visible in the retroperitoneum and bilateral inguinal regions; FDG uptake is normal.
No obvious effusion is seen in the abdominal or pelvic cavities.
Expansive osteoblastic bone destruction with soft tissue mass formation was observed in the right 4th rib.
Radial high-density lesions were seen within the mass, with decreased FDG uptake in the central area and thin-layered increased FDG uptake in the peripheral area (SUVmax = 2.5).
The remaining bone marrow cavity showed widespread increased FDG uptake, with no obvious focal abnormalities (SUVmax = 12.4).
The spinal alignment was normal, with some vertebral body marginal osteophytes.
Spotted and nodular high-density lesions were seen in the bilateral humeral heads, right scapula, sternum, bilateral iliac bones, left pubic tubercle, and bilateral femoral heads.

Impression

1. a. Post-rectal cancer treatment: Slight thickening of the rectal wall, no increase in FDG metabolism, suggesting suppressed tumor activity after treatment. Please follow up with colonoscopy. b. Right lobe of liver capsule shrinkage with a slightly low-density mass, partially reduced FDG metabolism, suggesting suppressed tumor activity after treatment of liver metastases based on medical history; left lateral lobe of liver nodule with increased FDG metabolism, suggesting an active metastatic lesion; localized increased FDG metabolism in the caudate lobe of the liver, decreasing to background levels after delayed scanning, suggesting physiological uptake. Follow-up with contrast-enhanced MRI is recommended for all of the above. c. Bone destruction of the right 4th rib with a soft tissue mass, lack of FDG metabolism in the central area, and slightly increased FDG metabolism in the peripheral area, suggesting post-treatment changes in bone metastases, with tumor activity largely suppressed.

2. Splenomegaly with slightly increased FDG metabolism, showing widespread increased FDG metabolism throughout the bone marrow cavity, suggesting changes after chemotherapy.

3. Degenerative changes in the spine, multiple bony islands (as described above).

4. Chronic inflammatory miliary foci and small nodular lesions in both lungs.

5. Scattered chronic inflammation and remnants in both lungs.

6. Manifestations of chronic gastritis.

7. Right renal cyst. Reactive hyperplasia of retroperitoneal and bilateral inguinal lymph nodes.

8. No obvious abnormalities on cranial scintigraphy.

9. Dense shadow in the left parapharyngeal space with chronic inflammatory changes on the adjacent left oropharyngeal wall; please correlate with clinical findings.

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