We present the FDG and Ga DOTATATE PET/CT findings of a 68-year-old woman with pulmonary metastases 28 years after her initial diagnosis of central nervous system hemangiopericytoma. The largest of the pulmonary lesions showed prominent Ga DOTATATE uptake with comparatively minimal FDG avidity. Hemangiopericytoma is a rare mesenchymal tumor that arises from malignant pericytes, cells that form the walls of capillaries and postcapillary venules. This case demonstrates the potential of radiolabeled somatostatin analogs as a therapeutic option in the setting of widespread metastatic disease.
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http://dx.doi.org/10.1097/RLU.0000000000001313 | DOI Listing |
Acad Radiol
January 2025
Department of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110 (S.I., M.A.T., M.I., C.S., R.L., A.H., R.L.W., T.J.F.). Electronic address:
Rationale And Objective: Conventional positron emission tomography (PET) respiratory gating utilizes a fraction of acquired PET counts (i.e., optimal gate [OG]), whereas elastic motion correction with deblurring (EMCD) utilizes all PET counts to reconstruct motion-corrected images without increasing image noise.
View Article and Find Full Text PDFCancers (Basel)
January 2025
The Brown Foundation Institute of Molecular Medicine, McGovern Medical School, The University of Texas Health Science Center, Houston, TX 77054, USA.
Background: While the clinical use of radiolabeled somatostatin analogs is well established in neuroendocrine tumors, there is growing interest in expanding their application to other somatostatin receptor 2 (SSTR2)-expressing cancers. This study investigates the potential utility of SSTR2-targeted theranostics in hepatocellular carcinoma (HCC).
Methods: SSTR2 expression in HCC cell lines and clinical samples was evaluated using qRT-PCR, Western blot analysis, and a public dataset.
Clin Nucl Med
January 2025
Department of Nuclear Medicine, Royal Free London NHS Foundation Trust, London, United Kingdom.
A 57-year-old man with a 3-month history of lower abdominal pain and rectal bleeding with black stools underwent urgent abdominal CT, which revealed an ovoid hyperdense lesion in the ileum in the right iliac fossa. The prime differential was a midgut neuroendocrine tumor. Thus, the patient was referred for a 68Ga-DOTATATE PET/CT scan, which demonstrated intense activity in this lesion with no evidence of somatostatin receptor expression elsewhere.
View Article and Find Full Text PDFClin Nucl Med
January 2025
From the Department of Nuclear Medicine, Beijing Friendship Hospital of Capital Medical University, Beijing, China.
An 8-year-old girl with refractory high-risk neuroblastoma underwent 68Ga-DOTATATE PET/CT to evaluate the feasibility of potential 177Lu-DOTATATE therapy. The scan showed multiple foci of abnormal 68Ga-DOTATATE accumulation in the bone region, indicating the presence of bone metastases. Unexpectedly, an abnormal tracer uptake was noted in the left lateral ventricle area.
View Article and Find Full Text PDFFront Oncol
January 2025
Department of Nuclear Medicine, Mount Sinai Hospital at Icahn School of Medicine, New York, NY, United States.
Peptide receptor radionuclide therapy (PRRT) is used for the management of neuroendocrine tumors (NETs) not responsive to somatostatin analogs. In this case series, we report two patients with pancreatic vasoactive intestinal peptide (VIP)-secreting NETs (VIPomas) not responsive to any other therapies who achieved symptomatic control and a significant decrease in serum VIP levels with PRRT during their hospital stay. Two patients with VIPomas were admitted to the hospital with multiple prior hospital admissions after going through multiple lines of therapy.
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