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Clinical Nuclear Medicine

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https://www.readbyqxmd.com/read/28806264/18f-fdg-pet-ct-of-brown-adipose-tissue-hyperactivation-associated-with-pregnancy-and-paraganglioma
#1
Anna Margherita Maffione, Lucia Rampin, Sotirios Chondrogiannis, Maria Cristina Marzola, Patrick M Colletti, Domenico Rubello
This 32-year-old woman presented with pregnancy-related arterial hypertension unresponsive to antihypertensive therapy. During cesarean delivery, a lobulated retroperitoneal mass was discovered. F-FDG PET/CT performed 18 days postpartum demonstrated the hyperactive retroperitoneal mass and extensive hyperactivated brown adipose tissue. The mass was surgically removed, revealing a para-aortic multicentric paraganglioma. After surgery, blood pressure normalized, and serum chromogranin A and urinary metanephrines normalized...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806263/18f-dcfbc-prostate-specific-membrane-antigen-targeted-pet-ct-imaging-in-localized-prostate-cancer-correlation-with-multiparametric-mri-and-histopathology
#2
Baris Turkbey, Esther Mena, Liza Lindenberg, Stephen Adler, Sandra Bednarova, Rose Berman, Anita T Ton, Yolanda McKinney, Philip Eclarinal, Craig Hill, George Afari, Sibaprasad Bhattacharyya, Ronnie C Mease, Maria J Merino, Paula M Jacobs, Bradford J Wood, Peter A Pinto, Martin G Pomper, Peter L Choyke
PURPOSE: To assess the ability of (N-[N-[(S)-1,3-dicarboxypropyl]carbamoyl]-4-F-fluorobenzyl-L-cysteine) (F-DCFBC), a prostate-specific membrane antigen-targeted PET agent, to detect localized prostate cancer lesions in correlation with multiparametric MRI (mpMRI) and histopathology. METHODS: This Health Insurance Portability and Accountability Act of 1996-compliant, prospective, institutional review board-approved study included 13 evaluable patients with localized prostate cancer (median age, 62...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806262/an-unusual-case-of-penile-prostate-cancer-uncovered-by-multiparametric-mri-and-psma-targeted-18f-dcfpyl-pet-ct
#3
Steven P Rowe, Michael A Gorin, Linda C Chu, Kenneth J Pienta, Martin G Pomper, Ashley E Ross, Katarzyna J Macura
Multiparametric MRI (mpMRI) is currently the test of choice for imaging sites of prostate cancer located within the pelvis. However, molecular imaging with PET radiotracers that bind to prostate-specific membrane antigen is increasingly being used for this purpose and may compliment mpMRI findings. We present a case of a 59-year-old man with elevated postprostatectomy serum prostate-specific antigen level who was found on both mpMRI and prostate-specific membrane antigen-targeted PET to harbor residual prostate cancer in the corpus spongiosum along the proximal urethra...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806261/unexpected-fibrosing-mediastinitis-shown-on-fdg-pet-ct-in-a-patient-with-igg4-related-disease
#4
Ying Kan, Leilei Yuan, Wei Wang, Jigang Yang
A 66-year-old man presented to our hospital because of abdominal pain for 5 days. A contrast abdominal CT raised the possibility of pancreatic carcinoma. FDG PET/CT showed increased FDG accumulation not only in the pancreas and the retroperitoneum, but also in the posterior mediastinum, which was not typical of pancreatic carcinoma. The patient was subsequently diagnosed having immunoglobulin G4-related disease following the histopathologic examination.
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806260/68ga-psma-ligand-pet-ct-uptake-in-anthracosilicosis
#5
Madeleine McGuiness, Brett Sounness
This interesting image illustrates a case of biopsy-proven pulmonary anthracosilicosis, a mixed dust pneumoconiosis, associated with Ga-PSMA-ligand uptake. Prostate-specific membrane antigen (PSMA) is an emerging imaging biomarker, with clinical application in evaluation of prostate cancer using Ga-PSMA-ligand PET/CT. Contrary to its name, PSMA is expressed in a number of other normal tissues and pathological states. Prostate-specific membrane antigen expression has been linked to tumor angiogenesis in various other epithelial neoplasms, as well as neovasculature associated with tissue regeneration and repair...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806259/serendipitous-discovery-of-isolated-gastric-metastases-from-adenocarcinoma-of-the-lung-on-staging-18f-fdg-pet-ct
#6
Punit Sharma, Amit Dutt Dwary, Enam Murshed Khan
Gastric metastasis from lung cancer is rare. We here present the case of a 59-year-old man with lung adenocarcinoma where isolated gastric metastases were discovered on staging F-FDG PET-CT, confirmed with endoscopy and biopsy.
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806258/recurrent-scapular-metastasis-from-hepatoblastoma-shown-on-fdg-pet-ct-and-f-dopa-pet-ct
#7
Bing Zhang, Qiao He, Xinchong Shi, Xiaoyan Wang, Xiangsong Zhang
We report the case of a 4-year-old girl with a biochemical relapse (plasma α-fetoprotein of 57,987.6 μg/L) after hepatoblastoma and extrahepatic metastases removal and adjuvant chemotherapy. Abdominal ultrasound, CT, and MRI failed to determine the site of recurrence. F-FDG PET/CT showed increased activity in the region of left scapula and adjacent soft tissue, which was incorrectly interpreted as the postoperative repair or inflammatory change. F-DOPA PET/CT showed increased activity and noticeable progressed lesion in the same place...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806257/orbital-hemangiopericytoma-in-68ga-prostate-specific-membrane-antigen-hbed-cc-pet-ct
#8
Jochen Hammes, Carsten Kobe, Ute Hilgenberg, Wolfgang E Lieb, Alexander Drzezga
A 76-year-old man with biochemical relapse of prostate cancer underwent Ga-prostate-specific membrane antigen PET/CT. Besides a local lymph node metastasis, a nodular structure inside the left orbit caudal to the optic nerve showed increased uptake. A metastasis in this location is unlikely. The subsequently performed MRI showed the structure being T1 hypointense, T2 indifferent, and strongly gadolinium contrast agent enhancing. Histopathologic examination after surgical removal identified the tumor as hemangiopericytoma, which rarely occurs in the orbit...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806256/recurrent-malignant-melanoma-detected-on-18f-fluciclovine-pet-ct-imaging-for-prostate-cancer
#9
Eugene J Teoh, Maria T Tsakok, Kevin M Bradley, Katherine Hyde, Manil Subesinghe, Fergus V Gleeson
A 66-year-old man presented with biochemical recurrence of prostate cancer and underwent F-fluciclovine PET/CT to detect sites of recurrence. He had a history of resected truncal stage IIIC malignant melanoma, with bilateral axillary node involvement on sentinel node biopsy, in complete remission for 3 years. F-fluciclovine PET/CT demonstrated an incidental fluciclovine-avid right axillary node (SUVmax = 4.3). Diagnostic sampling confirmed recurrent malignant melanoma.
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806255/intra-articular-melanoma-metastasis-in-the-ankle-joint
#10
Jennifer Murphy, Ian Brennan, Ciaran Johnston
Intra-articular melanoma metastases are rare. We present a case of a 65-year-old woman with metastatic melanoma in the right ankle joint. F-FDG PET/CT was performed from the vertex to the toes, which demonstrated FDG-avid inguinal lymphadenopathy and an intensely FDG-avid soft tissue mass adjacent to the neck of the talus within the right ankle joint. The intra-articular mass was subsequently resected and histologically confirmed as metastatic melanoma. This case emphasizes the value of the contemporaneous CT in these studies for accurate anatomical localization in diagnostically challenging clinical scenarios...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806254/rare-ileal-ewing-sarcoma-primitive-neuroectodermal-tumor-on-18f-fdg-pet-ct
#11
Pan Yu, Fei Xiaochun, Lv Jing, Zhang Yifan
A 24-year-old woman who had melena, dizziness, and fatigue and looked pale for 2 months was confirmed to have a microcytic hypochromic anemia in the local hospital. It was further revealed that the patient had splenomegaly and a small intestinal lump, and she was then referred to our hospital. The enhanced CT showed an ileal lesion with enhancement, which showed an increased F-FDG activity in further PET/CT scanning. Lymphoma was therefore suspected, and an uncomplicated surgical resection of the ileal lesion was then performed...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806253/variable-mibg-activity-in-the-same-renal-cyst
#12
Xiaofei Zhao, Hongming Zhuang
A series of I-MIBG scanning was performed in a 33-year-old woman with a history of ganglioneuroblastoma and a known left renal cyst. The initial studies did not reveal any MIBG activity in the renal cyst. However, increased MIBG activity was noted in the same renal cyst in the subsequent follow-up scans.
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806252/quality-and-safety-in-health-care-part-xxx-transcatheter-aortic-valve-therapy
#13
Jay A Harolds
Initially, the transcatheter aortic valve replacement procedure was approved only for patients with aortic stenosis that was both severe and symptomatic who either also had too high a risk of aortic valve replacement surgery to have the surgery or who had a high risk for the surgery. Between the years 2012 and 2015, the death rate at 30 days declined from an initial rate of 7.5% to 4.6%. There has also been more use of the transfemoral approach over the years. In 2016, the transcatheter aortic valve replacement was approved for patients with aortic stenosis at intermediate risk of surgery...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806251/pet-ct-in-an-8-year-old-girl-with-epstein-barr-virus-associated-smooth-muscle-tumor
#14
Ishan Garg, Maria J Baladron Zanetti, Saba Yasir, Ajit H Goenka, Ayse T Kendi
Epstein-Barr virus-associated smooth muscle tumor is a rare indolent neoplasm, which can occur in unusual locations. It has been reported in immunosuppressed individuals in only 3 settings: posttransplant, human immunodeficiency virus infection, and primary immunodeficiency. Here, we present CT, MRI, and F-FDG PET/CT findings of Epstein-Barr virus-associated smooth muscle tumor in an 8-year-old girl with primary immunodeficiency and metachronous adrenal involvement.This is an open access article distributed under the Creative Commons Attribution License 4...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806250/recurrent-leiomyosarcoma-of-external-oblique-muscle-detected-on-99mtc-mdp-spect-ct
#15
Taisong Wang, Yan Xing, Wenli Qiao, Jinhua Zhao
A Tc-MDP bone scintigraphy was performed in an 88-year-old man with a history of right external oblique muscle leiomyosarcoma, which was resected 8 months ago. The static images showed abnormal tracer uptake in the region of resection bed. SPECT/CT images demonstrated that the increased activity was from a partially calcified soft tissue mass in external oblique muscle. Subsequent pathological examination confirmed recurrent tumor.
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806249/epidural-metastases-from-follicular-thyroid-cancer-mimicking-meningiomas-in-68ga-dotatate-pet
#16
Marcus Unterrainer, Harun Ilhan, Andrei Todica, Peter Bartenstein, Nathalie Lisa Albert
We report a woman with multifocal lesions suggestive of meningiomas in MRI, which also presented with high Ga-DOTATATE uptake in PET, a finding characteristic for meningioma. A whole-body staging due to a pathological fracture revealed multiple neoplastic lesions throughout the body without detection of a primary site. Subsequent pathological workup of a lung lesion revealed multifocal metastases from follicular thyroid cancer despite thyroidectomy 10 years ago (without pathological finding), and posttreatment scans after radioiodine therapy confirmed the multiple brain lesions to be metastases as well...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806248/bone-spect-ct-localizes-increased-bone-metabolism-and-subsequent-bone-resorption-in-reflex-sympathetic-dystrophy
#17
Hidetoshi Narimatsu, Tadaki Nakahara, Sayuri Kodama, Hiromi Hisazumi, Shinichi Tominaga, Kiyoshi Ohkuma, Masahiro Jinzaki
A 64-year-old man with lung cancer with a history of revascularization of the occluded right femoral artery underwent bone scintigraphy, which showed intense uptake in the distal side of the right leg. The additional SPECT/CT clarified that the uptake was predominantly increased in the epiphyses of the right ankle and foot with possible osteopenia. One month later, follow-up SPECT/CT showed the manifestation of periosteal resorption in the hypermetabolic sites with slight decrease in bone metabolism. Radiological correlation between bone metabolism and subsequent bone resorption in addition to clinical symptoms in this patient suggested the diagnosis of reflex sympathetic dystrophy...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806247/glomus-tumor-of-the-neck-detected-with-99mtc-edda-hynic-toc
#18
Neva Girotto, Tatjana Bogović-Crnčić, Svjetlana Grbac-Ivanković, Petra Valković-Zujić
A 54-year-old woman was referred to thyroid evaluation because of a lump on the left side of the neck. Ultrasound exam did not show any thyroid abnormality, but highly perfused nodule at the left common carotid artery bifurcation was found. Because of the specific location, somatostatin receptor scintigraphy with Tc EDDA HYNIC-TOC was performed, starting with perfusion images and followed with SPECT/CT imaging at 2 and 4 hours. Well-perfused nodule with intensive accumulation and no other visible pathology in the body raised suspicion of a glomus tumor, consistent with MR exam performed later...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806246/response-assessment-of-223ra-treatment-should-a-fluorocholine-pet-ct-be-performed
#19
Ana María García Vicente, Ángel Soriano Castrejón, Ruth Alvarez Cabellos, Belén Sanchez Gil, Nicolás Mohedano Mohedano
We present 3 cases of patients with castration-resistant prostate cancer and bone metastases treated with Ra, belonging to our prospective and multicenter ChoPET-Rad study. All patients underwent clinical, hematological, and biochemical monitoring between each Ra administration. Initial and follow-up F-fluorocholine PET/CT and Tc-biphosphonate bone scintigraphy were performed previously and after the third Ra administration. Both techniques correctly established the response to treatment, in agreement to the biochemical response, although differences in the disease expression (concordant and discordant patterns) were found because of the different radiotracer biodistribution and molecular information derived from them...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28806245/gorham-stout-disease-affecting-the-mandible-bone-scintigraphy-and-computed-tomography-findings
#20
Soo Bin Park, Joon Young Choi, Soo Jeong Kim
We present images of a 13-year-old boy with Gorham-Stout disease affecting the mandible. Initial bone scintigraphy showed poor visualization of Tc-methylene diphosphonate (Tc-MDP) uptake in the mandible body. However, abnormally increased Tc-MDP uptake was noted in the bilateral mandibular rami. In the follow-up examination a year later, bone scintigraphy indicated that the disease had progressed to the bilateral mandibular rami with no uptake. In addition, massive osteolysis of the mandible was noted that had progressed since the initial computed tomography...
August 12, 2017: Clinical Nuclear Medicine
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