Whole-body 18F-FDG PET/CT scan in a patient with Gastric 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: The brain morphology and structure were normal, with no abnormal density shadows in the brain parenchyma and no abnormal FDG uptake.
There was no widening of the ventricles, sulci, fissures, or cisterns, and no abnormalities in local density or FDG uptake; there was no midline shift.
The bilateral eyeballs had normal morphology and outline, with clear retrobulbar structures and no abnormal FDG uptake.
The paranasal sinus mucosa showed no significant thickening, and the sinus walls were intact.
The soft tissue of the nasopharyngeal walls showed no significant thickening, the bilateral pharyngeal recesses were symmetrical, and FDG uptake was increased (SUVmax = 5.3).
The base of the tongue and the bilateral palatine tonsils were full, with increased FDG uptake (SUVmax = 8.1).
The laryngopharynx had normal morphology and structure, and the parapharyngeal space was clear.
The parotid and submandibular glands showed no abnormalities in size, shape, or density, and FDG uptake was physiological.
The thyroid gland was normal in shape and size, with no obvious abnormal density shadows, and FDG uptake was normal.
No significantly enlarged lymph nodes were observed in the bilateral deep cervical spaces, submandibular region, or submental region, and FDG uptake was normal.
No obvious abnormal soft tissue nodules or masses were observed in either lung, and FDG uptake was normal.
No significant thickening of the pleura was observed bilaterally, and no significant pleural effusion was observed bilaterally.
The heart size was normal, and the intracardiac chamber density was lower than that of the myocardium.
An IV port was being inserted.
Post-gastric cancer treatment: Poor gastric filling, widespread and uneven thickening of the gastric body and wall, with the thickest point approximately 1.1 cm, increased FDG uptake, SUVmax = 4.6.
The gastric wall at the cardia was thicker, with increased FDG uptake, SUVmax = 4.5.
The upper abdominal structures are disordered and poorly visualized.
Small and slightly larger lymph nodes are seen in the hepatogastric space, hepatic hilum, and retroperitoneal region.
The largest is located retroperitoneally, with a short diameter of approximately 1.0 cm.
FDG uptake is normal.
Two low-density nodular lesions are seen in the left supraclavicular fossa and the left upper thoracic inlet.
The former is larger, measuring approximately 1.2 1.9 cm, with increased FDG uptake (SUVmax = 3.1).
No significantly enlarged lymph nodes are seen in the remaining mediastinum and bilateral hilum, and FDG uptake is not significantly increased.
The greater omentum, mesentery, bilateral paracolic gutter, and pelvic floor peritoneum are slightly thickened, most notably in the greater omentum, which contains a soft tissue nodule with a long diameter of approximately 0.8 cm.
FDG uptake is normal.
A small amount of pelvic effusion is present.
The esophagus is not dilated, and the esophageal wall is not significantly thickened or swollen.
FDG uptake is normal.
The intestines were not sufficiently full, with no local masses observed.
FDG uptake was increased in some intestinal segments (SUVmax = 7.3).
The liver showed no obvious abnormalities in shape or size, with smooth borders and no widening of the hepatic fissures.
Scattered multiple low-density nodules and masses were observed within the liver parenchyma, with relatively clear borders.
Some were irregular in shape, the largest being approximately 3.2 cm in long diameter.
Patchy slightly high-density shadows were seen in some lesions.
Most lesions showed background FDG uptake, while a few showed increased FDG uptake (SUVmax = 5.2).
No dilation of intrahepatic or extrahepatic bile ducts was observed.
The gallbladder showed no abnormalities in shape or size, with no thickening of the gallbladder wall, no positive stones or obvious masses, and no abnormal FDG uptake in the gallbladder fossa.
The peripancreatic spaces were clear, with no obvious abnormal density shadows in the parenchyma.
The pancreatic duct was not widened, and no abnormal FDG uptake was observed.
The spleen's shape and size are basically normal, and its density and FDG uptake are not abnormal.
Both adrenal glands are slightly enlarged, with increased FDG uptake, more pronounced on the left side, SUVmax=5.8.
Both kidneys are normal in shape and size, with no obvious abnormal density shadows seen in the renal parenchyma, and no obvious abnormalities in FDG uptake.
No widening of the renal pelvis, calyces, or ureters is seen bilaterally, and no positive stones are seen locally.
The prostate's shape and size are normal, and no focal abnormal increases in FDG uptake are seen.
The bladder is poorly filled, and no positive stones are seen within the lumen.
No obvious bone structural abnormalities are seen in the vertebral bodies, and no abnormal FDG uptake is seen.

Impression

1. After treatment for gastric cancer with multiple metastases, the activity of most tumors was suppressed, while some tumors retained activity, specifically as follows: a. Extensive and uneven thickening of the gastric body and wall, with decreased FDG metabolism and a smaller affected area compared to before. b. Significantly smaller lymph nodes in the left supraclavicular fossa and left upper thoracic inlet, with significantly decreased FDG metabolism (still above background levels). Some of the previously enlarged thoracic and abdominal lymph nodes disappeared, and some significantly decreased in size, with FDG metabolism reduced to background levels. c. Slight peritoneal thickening with omental soft tissue nodules in multiple areas, significantly smaller in area than before, with significantly reduced FDG metabolism to background levels. d. The volume and density of multiple liver lesions have decreased compared to before, and FDG metabolism has decreased (most to background levels, a few still above the liver background level). e. The bilateral adrenal glands have slightly thickened after treatment, and FDG metabolism has significantly decreased compared to before. f. The previously focal FDG metabolism increase in multiple bones was not clearly visible in this examination. The previously right-sided FDG metabolism increase in the spinal canal at the T5 vertebral level was not clearly visible in this examination.

2. The gastric wall at the cardia is thickened with increased FDG metabolism; combined with the previous gastroscopy and PET/CT scan, this is considered to be physiological or inflammatory uptake. Physiological uptake in part of the intestine. Small amount of pelvic effusion.

3. The previously solid miliary nodule in the right lung was not clearly visible in this examination. Anemia is present.

4. Physiological or inflammatory uptake in the nasopharynx, base of the tongue, and bilateral palatine tonsils.

5. The previously observed low-density lesion in the head of the left caudate nucleus was not clearly visualized this time; please follow up with MRI.

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