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A 75-year-old man with suspected prostate cancer underwent a 99mTc-MDP bone scan to exclude the possibility of bone metastasis. Scans revealed areas of increased tracer uptake in a symmetric distribution on both sides of the pelvis. Further SPECT/CT imaging showed focal 99mTc-MDP accumulation within 2 cystic lesions on both sides of the bladder. Subsequent x-ray cystography showed contrast agent filling within both cystic lesions, which suggested double bladder diverticula. Eventually, these 2 cystic lesions were confirmed by surgery and pathology as double congenital bladder diverticula. A 75-year-old man with suspected prostate cancer underwent a 99mTc-MDP bone scan to exclude the possibility of bone metastasis. Scans revealed areas of increased tracer uptake in a symmetric distribution on both sides of the pelvis. Further SPECT/CT imaging showed focal 99mTc-MDP accumulation within 2 cystic lesions on both sides of the bladder. Subsequent x-ray cystography showed contrast agent filling within both cystic lesions, which suggested double bladder diverticula. Eventually, these 2 cystic lesions were confirmed by surgery and pathology as double congenital bladder diverticula. Primitive neuroectodermal tumor (PNET) is an aggressive small cell malignancy. Apart from the central nervous system, they can arise from peripheral sites as well. Ovarian PNETs are extremely rare neoplasms. We here present a case of childhood ovarian PNET, where 18F-FDG PET/CT was efficiently used for staging and response evaluation. Primitive neuroectodermal tumor (PNET) is an aggressive small cell malignancy. Apart from the central nervous system, they can arise from peripheral sites as well. Ovarian PNETs are extremely rare neoplasms. We here present a case of childhood ovarian PNET, where 18F-FDG PET/CT was efficiently used for staging and response evaluation. We carried out a retrospective cohort study of patients with BR after primary treatment of PC who received imaging with 18F-fluciclovine PET/CT at our institution between January 2010 and January 2019. https://www.selleckchem.com/products/rgd-arg-gly-asp-peptides.html PET/CT results were compared with biopsy, conventional imaging results, and/or response to PC therapy. 18F-Fluciclovine PET/CT performance statistics and effects on treatment planning were calculated. A total of 328 patients with a median age of 71 years (range, 47-90 years) and median serum prostate-specific antigen level of 1.6 ng/mL (0.02-186.7 ng/mL) were included. Three hundred thirty-six 18F-fluciclovine PET/CT scans were analyzed and classified as positive (65%), negative (25%), or equivocal (10%) based on radiology reports. Sensitivity was 93% (95% confidence interval, 86%-96%) and specificity was 63% (95% confidence interval, 45%-77%). Of patients with known management recommendations post-PET/CT, scan results changed or influenced pre-PET/CT management plans in 73%, and 58% of recommendations involved treatment modality decisions. Overall, 82% of patients' actual management was concordant with post-PET/CT recommendations. Of evaluable patients, 116 (35%) had some form of post-PET radiotherapy included in their care plans, with 95% receiving radiotherapy at a PET-avid target. In the largest single-institutional cohort to date, 18F-fluciclovine PET/CT showed value in the workup of PC in the setting of BR, with noteworthy influence over clinical management decisions. Further studies are needed to evaluate whether PET/CT-based changes in management are associated with improved outcomes. In the largest single-institutional cohort to date, 18F-fluciclovine PET/CT showed value in the workup of PC in the setting of BR, with noteworthy influence over clinical management decisions. Further studies are needed to evaluate whether PET/CT-based changes in management are associated with improved outcomes. Gitelman syndrome is an autosomal recessive renal tubulopathy. A 38-year-old woman was diagnosed with Gitelman syndrome. Eight years later, 18F-FDG PET/CT was performed to evaluate recurrence of endometrial cancer. FDG PET images showed an extremely abnormal FDG biodistribution. They showed decreased brain uptake, increased cardiac muscle uptake, and diffuse increased muscle and adipose tissue uptake. This pattern is similar to high insulin state; however, her glucose level was normal, and insulin level was very low. Gitelman syndrome is an autosomal recessive renal tubulopathy. A 38-year-old woman was diagnosed with Gitelman syndrome. Eight years later, 18F-FDG PET/CT was performed to evaluate recurrence of endometrial cancer. FDG PET images showed an extremely abnormal FDG biodistribution. They showed decreased brain uptake, increased cardiac muscle uptake, and diffuse increased muscle and adipose tissue uptake. This pattern is similar to high insulin state; however, her glucose level was normal, and insulin level was very low. We describe the utility of molecular imaging with 18F-FDG and 68Ga-DOTANOC PET for treatment response assessment in a case of metastatic medulloblastoma. 18F-FDG and 68Ga-DOTANOC PET/CT revealed extensive metastases to bone and bone marrow. Patient subsequently had an excellent response to systemic chemotherapy which was evidenced by resolution of tracer-avid skeletal lesions on both FDG and DOTANOC PET/CT. We describe the utility of molecular imaging with 18F-FDG and 68Ga-DOTANOC PET for treatment response assessment in a case of metastatic medulloblastoma. 18F-FDG and 68Ga-DOTANOC PET/CT revealed extensive metastases to bone and bone marrow. Patient subsequently had an excellent response to systemic chemotherapy which was evidenced by resolution of tracer-avid skeletal lesions on both FDG and DOTANOC PET/CT. Prostate cancer osteoblastic metastases may have different morphologies, and some of these may overlap with certain benign bone lesions. In this series of 5 prostate cancer patients, we describe bone lesions with central lucency and surrounding peripheral sclerosis and their varying appearances on different imaging modalities. Although prostate cancer metastases are commonly associated with sclerotic lesions, they can also present as osteolytic or lucent lesions, and these lesions should be carefully evaluated. The findings emphasize the importance of correlation with prior imaging, comparing findings on different imaging techniques and follow-up to differentiate benign disease from metastatic disease in these situations. Prostate cancer osteoblastic metastases may have different morphologies, and some of these may overlap with certain benign bone lesions. In this series of 5 prostate cancer patients, we describe bone lesions with central lucency and surrounding peripheral sclerosis and their varying appearances on different imaging modalities.
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