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As unilateral perfusion deficits of an entire lobe are generally not due to pulmonary embolism, further CT angiography and cardiac MRI were conducted. These examinations revealed high-grade left pulmonary vein stenosis (PVS) caused by pulmonary vein isolation performed for atrial fibrillation 3 and 4 years earlier. Thus, in addition to, for example, neoplastic processes or pulmonary congenital vascular abnormalities, PVS must be considered as a differential diagnosis and possible pitfall in ventilation/perfusion SPECT/CT in dyspneic patients with prior pulmonary vein isolation. A 74-year-old man with biochemical recurrent prostate cancer underwent 18F-fluciclovine PET/CT for restaging to determine subsequent treatment strategy. 18F-fluciclovine PET/CT imaging demonstrated incidental focal heterogeneous increased 18F-fluciclovine uptake corresponding to a soft tissue nodule within the musculature of the left anterior abdominal wall. https://www.selleckchem.com/ Subsequent ultrasound-guided biopsy of the lesion revealed histopathology compatible with a desmoid tumor. Consequently, the patient underwent surgical resection with wide local excision of the lesion. A 74-year-old man with biochemical recurrent prostate cancer underwent 18F-fluciclovine PET/CT for restaging to determine subsequent treatment strategy. 18F-fluciclovine PET/CT imaging demonstrated incidental focal heterogeneous increased 18F-fluciclovine uptake corresponding to a soft tissue nodule within the musculature of the left anterior abdominal wall. Subsequent ultrasound-guided biopsy of the lesion revealed histopathology compatible with a desmoid tumor. Consequently, the patient underwent surgical resection with wide local excision of the lesion. Amyotrophic lateral sclerosis (ALS) involves both upper motor neurons (UMNs) and lower motor neurons. The detection of UMN involvement, a core component of ALS criteria, is primarily dependent on neurological examination because of a lack of definitive biomarkers. We present the 18F-THK5351 PET images of a 76-year-old man diagnosed with ALS comorbid with Alzheimer disease, demonstrating marked accumulation of 18F-THK5351 in the bilateral precentral gyri. Because 18F-THK5351 binds to monoamine oxidase B highly expressed in astrocytes, where the neurodegenerative process is ongoing, our case highlights that 18F-THK5351 tracer should be a useful marker for detecting UMN neurodegeneration in ALS. Amyotrophic lateral sclerosis (ALS) involves both upper motor neurons (UMNs) and lower motor neurons. The detection of UMN involvement, a core component of ALS criteria, is primarily dependent on neurological examination because of a lack of definitive biomarkers. We present the 18F-THK5351 PET images of a 76-year-old man diagnosed with ALS comorbid with Alzheimer disease, demonstrating marked accumulation of 18F-THK5351 in the bilateral precentral gyri. Because 18F-THK5351 binds to monoamine oxidase B highly expressed in astrocytes, where the neurodegenerative process is ongoing, our case highlights that 18F-THK5351 tracer should be a useful marker for detecting UMN neurodegeneration in ALS. Malignant granular cell tumor variant is rare and even more if lower extremities are involved. We present a rare case with images of 18F-FDG PET/CT showing 2 hypermetabolic lesions on the right tight with an elevated SUVmax value of 7.50 and 2 adenopathies with an SUVmax almost as high as the lesions. Histopathologic sample after complete excision confirmed malignant granular cell tumor with lymph node metastases. Malignant granular cell tumor variant is rare and even more if lower extremities are involved. We present a rare case with images of 18F-FDG PET/CT showing 2 hypermetabolic lesions on the right tight with an elevated SUVmax value of 7.50 and 2 adenopathies with an SUVmax almost as high as the lesions. Histopathologic sample after complete excision confirmed malignant granular cell tumor with lymph node metastases. Pancreatitis, panniculitis, and polyarthritis syndrome is a rare disease. A 49-year-old man recently complained of bilateral ankle and epigastric pain. An ankle x-ray showed subcutaneous soft tissue swelling. Subsequent 99mTc-MDP bone scan showed foci of abnormal activity around joints in all extremities, especially in the knees and ankles. In addition, multiple nodular calcifications in the head of the pancreas were found in the abdominal CT scan. The patient also had increased blood amylase and lipase. The symptoms were resolved after the treatment of his pancreatitis. Pancreatitis, panniculitis, and polyarthritis syndrome is a rare disease. A 49-year-old man recently complained of bilateral ankle and epigastric pain. An ankle x-ray showed subcutaneous soft tissue swelling. Subsequent 99mTc-MDP bone scan showed foci of abnormal activity around joints in all extremities, especially in the knees and ankles. In addition, multiple nodular calcifications in the head of the pancreas were found in the abdominal CT scan. The patient also had increased blood amylase and lipase. The symptoms were resolved after the treatment of his pancreatitis. Vertebral hemangiomas are the most common benign tumors of the spine and mostly occur in the thoracic spine. Mostly they are detected incidentally during imaging studies for other reasons. We present the case of vertebral hemangioma that showed prostate-specific membrane antigen uptake in the second 68Ga-prostate-specific membrane antigen PET/CT, whereas no uptake was observed in the initial study. Vertebral hemangiomas are the most common benign tumors of the spine and mostly occur in the thoracic spine. Mostly they are detected incidentally during imaging studies for other reasons. We present the case of vertebral hemangioma that showed prostate-specific membrane antigen uptake in the second 68Ga-prostate-specific membrane antigen PET/CT, whereas no uptake was observed in the initial study. 18F-prostate-specific membrane antigen (PSMA) PET/CT imaging is increasingly used in staging, assessment of biochemical recurrence, and treatment response in men with prostate cancer. We present a case report of a 70-year-old man who underwent 18F-PSMA PET/CT imaging to investigate biochemical recurrence following radical prostatectomy for prostate adenocarcinoma. New focal moderate PSMA uptake was identified in the left femur. A previous PSMA study, performed 5 months earlier, was normal. A subsequent MRI scan demonstrated that the PSMA avidity corresponded to a new femoral bone infarct. An English literature search revealed no previous cases of PSMA tracer uptake in bone infarction. 18F-prostate-specific membrane antigen (PSMA) PET/CT imaging is increasingly used in staging, assessment of biochemical recurrence, and treatment response in men with prostate cancer. We present a case report of a 70-year-old man who underwent 18F-PSMA PET/CT imaging to investigate biochemical recurrence following radical prostatectomy for prostate adenocarcinoma.
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