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Hellenic Journal of Nuclear Medicine

Ioannis D Gkegkes, Christos Iavazzo
Dear Editor, Penile cancer has a relatively low incidence of 0.6% among all types of neoplasms. These incidents can reach up to 10% in the developing countries. Resection of the primary cancer and early dissection of nodal metastases may improve survival. Nevertheless, inguinal lymphadenectomy may have a negative impact on patient's quality of life due to possible surgical site infection, lymphocyst formation or lymphoedema. Sentinel lymph node (SLN) detection by radiopharmaceuticals, was first applied in penile cancer and is defined as the identification of the first regional lymph node by the primary site of cancer...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Jinhua Zi, Chao Ma, Changyun Xu, Yongli Bai
: A 10 years old boy presented to our hospital complaining of belly pain. He had a retroperitoneal mass diagnosed by ultrasound 3 days before. During that time he was found to have slight hypertension. Computed tomography (CT) showed a left retroperitoneal mass with edge enhancement and central necrosis indicating pheochromocytoma (PCC). Vanillymandelic acid (VMA) in the 24 hours urine sample was not elevated. Pheochromocytoma was suspected given his hypertension and the ultrasound and CT findings...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Pei Shu, Wenwu Ling, Chenjing Zhu, Jianchao Wang, Chong Jiang, Weiwei Zhang, Yue Xiao, Xuelei Ma
Testicular natural killer/T-cell lymphoma is a rare aggressive extranodal lymphoma associated with Epstein-Barr virus infection. Time to diagnose is crucial as the disease is rapidly progressive and fatal. Early suspicion is documented by imaging studies and testicular biopsies which are key factors for diagnosing testicular natural killer/T-cell lymphoma. However, no reports have described the results of imaging studies. In this paper, contrast-enhanced ultrasonography (CEUS), fluorine-18-fuorodexoyglucose-positron emission tomography/computed tomography ((18)F-FDG PET/CT) and tumor biopsies were all diagnostic of testicular natural killer/T-cell lymphoma...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Seol Hoon Park, Minjung Seo, Tae Young Park, Seong Nam-Goong
We report a very rare case of incidental intrapericardial thyroid in a papillary thyroid cancer patient. Post ablation scan revealed iodine-131 ((131)I) uptake in the mid-chest. Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) was performed and showed a (18)F-FDG avid lesion between the right atrium and the ascending aorta, (which was) shown tube an ectopic thyroid and not metastasis. The lesion disappeared on a 6 month follow-up (123)I whole body scan while serum thyroglobulin was negative...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Julie C Bulman, Jason Wachsmann, Fangyu Peng
OBJECTIVE: Cerebrospinal fluid (CSF) leak is a well-known complication of skull or sinus surgery. Radionuclide cisternography has high sensitivity for detection of CSF leak, commonly performed in conjunction with radioactivity assay of nasal pledgets. Our objective was to highlight the usefulness of single photon emission tomography/computed tomography (SPET/CT) in radionuclide cisternography by presenting a case of a 41 years old man with right sided rhinorrhea following craniotomies and sinus surgery, who was subjected to radioactivity assay of nasal pledgets and radionuclide cisternography for suspected CSF leak...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Benjapa Khiewvan, Drew A Torigian, Sahra Emamzadehfard, Koosha Paydary, Ali Salavati, Sina Houshmand, Sara Pourhassan Shamchi, Thomas J Werner, Aysel Aydin, Shambo Guha Roy, Abass Alavi, Rakesh Kumar
In cervical cancer (CC), fluorine18-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) has been proven to be beneficial for patient management. Positron emission tomography/CT is useful in pretreatment evaluation due to the ability to evaluate disease extent and to assess regional lymph nodes as well as distant sites for metastases. Positron emission tomography/CT has an impact on treatment planning as well as it is incorporated in radiation therapy planning, resulting in more appropriate and effective treatment with less cost and radiation dose to normal tissues...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Smaroula N Divani, George P Kalodimos, Matteo A Lioupis, Nikolaos Ch Syrmos
BACKGROUND: The relation between Hashimoto's thyroiditis (HT) and papillary thyroid carcinoma (PTC) remains controversial. We aimed to study the coexistence of PCT and HT and the diagnostic utility of cytokeratin19 and P63 proteins expression in all positive for PTC cases of HT. SUBJECTS AND METHODS: We analyzed data from 343 patients who underwent fine needle aspiration cytology followed by thyroid surgery over a six years period. Thyroid scans and blood measurements for anti-thyroid peroxidase antibodies (TPOAb), thyroid stimulating hormone (TSH), anti-thyroglobulin antibodies (TgAb) and free thyroid hormones were performed...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Sofus Rønne Soltau, Søren Hess, Tram Nguyen, Oke Gerke, Henrik Petersen, Abass Alavi, Poul Flemming Høilund-Carlsen
OBJECTIVE: Increased focal colorectal uptake of fluorine-18-fluorodeoxyglucose ((18)F-FDG) is reported to occur in 1%-3% of patients undergoing (18)F-FDG positron emission tomography/computed tomography (PET/CT) for disease outside the bowel. However, there is no consensus on how to deal with this finding in the clinic. Due to the non-specific appearance of such lesions and a certain rate of false positive findings, patients may by subjected to unnecessary invasive procedures or, conversely, cancers may be overlooked if the risk of malignancy is downplayed...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Zhengming Wang, Daqing Ma, Jigang Yang
BACKGROUND: Differentiation of vertebral metastases from Schmorl's nodes, especially with fluorine-18-fluorodeoxyglucose ((18)F-FDG) uptake, is very important for the appropriate management of these patients in case they have malignancy. We aimed to evaluate the value of (18)F-FDG positron emission tomography/computed tomography (PET/CT) in differentiating vertebral metastases from Schmorl's nodes with (18)F-FDG uptake. SUBJECTS AND METHODS: Fourteen patients with malignancy underwent (18)F-FDG PET/CT, which showed abnormal (18)F-FDG uptake in 19 Schmorl's nodes...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Christos M Michail, George E Karpetas, George P Fountos, Nektarios I Kalyvas, Ioannis G Valais, Christina Fountzoula, Antonis Zanglis, Ioannis S Kandarakis, George S Panayiotakis
OBJECTIVE: The aim of the present study was to propose a comprehensive method for positron emission tomography (PET) scanners image quality assessment, by simulation of a thin layer chromatography (TLC) flood source with a previously validated Monte Carlo model. METHODS AND MATERIALS: We used the GATE Monte Carlo package (GEANT4 application for tomographic emission) and the reconstructed images were obtained using the software for tomographic image reconstruction (STIR), with cluster computing...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Shihui Zhang, Shan Jiang, Zhiyong Yang, Ranlu Liu, Yunpeng Yang, Honghua Liang
OBJECTIVE: This paper describes an ultrasound image navigation robotic prostate brachytherapy system. It uses a 2D ultrasound (US) probe rigidly fixed to a robotic needle insertion mechanism. Combined with the US probe registration and image registration, this system will help to navigate the prostate brachytherapy to increase the inserting accuracy. SUBJECTS AND METHODS: The novelty of the system is that after the US probe registration using an improved iterative closest point (ICP) registration method, the initial registration for the magnetic resonance imaging (MRI) and US image can be completely automatically...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Linda Brammen, Suzanne Granegger, Helmut Sinzinger
OBJECTIVE: Platelet labeling is used to study platelets in vivo in terms of diagnosing intravascular thrombosis, as well as studying their role and biological activity in atherosclerosis. A low labeling efficiency (LE) can negatively impair testing results. Labeling efficiency depends on various factors, including low-density-lipoprotein (LDL)-cholesterol levels in the blood. Lipoprotein(a) (Lp(a)) is a lipoprotein subclass that when elevated, is frequently associated with the premature development of cardiovascular disease through activation of different signaling pathways and cell surface receptors...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Kursat Okuyucu, Semra Ince, Engin Alagoz, Ozdes Emer, Huseyin San, Elif Balkan, Aslı Ayan, Coskun Meric, Cem Haymana, Cengizhan Acıkel, Bengul Gunalp, Alper Ozgur Karacalioglu, Nuri Arslan
OBJECTIVE: In nearly 20%-30% of patients with differentiated thyroid carcinoma (DTC) relapse and 7% of them die during the next 10 years after initial diagnosis. In 10%-30% of patients with DTC after ablation therapy during the follow-up show a negative iodine-131 ((131)I) whole-body screening test ((131)I WBS) and increased serum thyroglobulin (Tg) level. Loss of ability of DTC metastatic lesions to trap (131)I is associated with pure survival and often aggressive disease. Several studies have shown that in DTC cases non trapping (131)I, fluorine-18-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) can detect recurrence or metastases with high sensitivity (80%-90%)...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Osman Beton, Hakki Kaya, Ozan Kandemir, Buket Alibazoglu, Haluk Alibazoglu, Ercan Karabey, Okan Onur Turgut, Mehmet Birhan Yilmaz
OBJECTIVE: The clinical significance of unligated major left internal mammary artery (LIMA)-side branches (SB) remains controversial in patients with previous coronary artery bypass graft (CABG) surgery. The aim of this study was to investigate the clinical significance of unligated major LIMA-SB by using exercise myocardial perfusion imaging (MPI) with single-photon emission tomography. SUBJECTS AND METHODS: We conducted a retrospective analysis of 2819 consecutive patients who underwent diagnostic angiography...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Alexandros Georgakopoulos, Nikoletta Pianou, Constantinos Anagnostopoulos
There is a growing research activity focusing on the brain heart cross-talk. A great variety of brain disorders affect the heart and recent developments in neurosciences have revealed the particular role of specific neuroanatomic sites on heart rhythm and rate, myocardial function and vascular tone. Cardiac radionuclide imaging plays a pivotal role in this setting, since not only helps elucidating underlying pathobiological mechanisms but in addition, it promises exciting possibilities for early identification of patients at risk of developing cardiovascular manifestations of certain neurological diseases...
November 8, 2016: Hellenic Journal of Nuclear Medicine
Andreas Otte
No abstract text is available yet for this article.
May 2016: Hellenic Journal of Nuclear Medicine
Jie Xiao, Guobing Liu, Dengfeng Cheng, Haixing Wang, Hongcheng Shi
Intravenous leiomyomatosis (IVL) of the uterus is a rare neoplasm which usually occurs after hysterectomy. Due to its rarity and non-specific clinical manifestations, IVL is commonly misdiagnosed as malignant thrombus or thrombosis and treated inappropriately. Herein, we report an unusual case of a 51 years old woman with IVL without hysterectomy or abdominal manifestations. The IVL was detected in the right atrium. This case highlights the usefulness of (18)F-FDG PET/CT in the diagnosis of IVL.
May 2016: Hellenic Journal of Nuclear Medicine
Li Li, Chong Jiang, Rong Tian
Multiple pulmonary hamartomas (PH) occur rarely, are mostly seen in females, and are usually leiomyomatous hamartomas. Here, we report an extremely rare case of a 30 years old male patient diagnosed as multiple pulmonary chondromatous hamartomas. He was admitted on May 2015 to our hospital for a 3 months history of cough. Multiple nodules in the right lung were detected on chest X-rays during a routine checkup 9 months ago and in a subsequent chest computed tomography (CT). However, he abandoned medical follow-up because he was asymptomatic...
May 2016: Hellenic Journal of Nuclear Medicine
Na Han, Hongyan Feng, Maher Mohamad Rajab Arnous, Altiné Bouhari, Xiaoli Lan
UNLABELLED: Focal fatty liver disease is less common than the diffuse form and may be misdiagnosed as nodular liver lesions or even liver metastases. Here, we report a 19 years old male, asymptomatic with liver lesions detected by ultrasound on routine examination. Further examinations with computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography/CT (PET/CT) showed multiple lesions of varying sizes on the liver, with elevated fluorine-18-fluorodeoxyglucose ((18)F-FDG) uptake (SUVmax: 4...
May 2016: Hellenic Journal of Nuclear Medicine
Burcak Yilmaz Gunes, Ozgur Akbayır, Emre Demirci, Ipek Ozaydin
Synchronous primary gynecologic malignancies are infrequently seen. In this report, we describe the clinical, pathological and fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) findings of a patient with synchronous primary vaginal and endometrial cancers. To our knowledge, this is the first such case described in the literature.
May 2016: Hellenic Journal of Nuclear Medicine
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