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https://www.readbyqxmd.com/read/28454478/enhanced-mri-t-2-relaxivity-in-contrast-probed-anchor-free-pegylated-iron-oxide-nanoparticles
#1
Bibek Thapa, Daysi Diaz-Diestra, Juan Beltran-Huarac, Brad R Weiner, Gerardo Morell
Superparamagnetic iron oxide nanoparticles (SPIONs, ~11-nm cores) were PEGylated without anchoring groups and studied as efficient MRI T 2 contrast agents (CAs). The ether group of PEG is efficiently and directly linked to the positively charged surface of SPIONs, and mediated through a dipole-cation covalent interaction. Anchor-free PEG-SPIONs exhibit a spin-spin relaxivity of 123 ± 6 mM(-1)s(-1), which is higher than those of PEG-SPIONs anchored with intermediate biomolecules, iron oxide nanoworms, or Feridex...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454464/metastasis-from-a-primary-hepatic-angiosarcoma-to-the-colon-a-case-report-and-literature-review
#2
Yukako Mokutani, Taishi Hata, Yuichiro Miyake, Hideki Kuroda, Hidekazu Takahashi, Naotsugu Haraguchi, Junichi Nishimura, Tsunekazu Mizushima, Hirofumi Yamamoto, Yuichiro Doki, Masaki Mori
Primary hepatic angiosarcoma is a rare type of tumor with a poor prognosis. To the best of our knowledge, curative surgery of a metastatic gastrointestinal angiosarcoma from a hepatic angiosarcoma has not been reported previously. In the present report, a case of colonic metastasis from a primary hepatic angiosarcoma is discussed. A rapidly growing mass was identified in the liver of an 84-year-old Japanese male who underwent a subsegmentectomy of the liver. Microscopic examination determined that the mass was an angiosarcoma composed of sheets of spindle cells...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454456/pulmonary-artery-intimal-sarcoma-misdiagnosed-as-pulmonary-embolism-a-case-report
#3
Shuyan Jiang, Jiaxin Li, Qingshi Zeng, Jiexian Liang
Intimal sarcoma of the pulmonary artery is rare, but false diagnosis of this sarcoma as pulmonary embolism is not infrequent. The present study reports a case of pulmonary artery intimal sarcoma misdiagnosed as pulmonary artery embolism in a 37-year-old female patient. The patient was admitted to the cardiac intensive care unit of Guangdong General Hospital (Guangzhou, China) with the complaint of progressive exertional dyspnea over the past two years. Multi-slice spiral computed tomography, transthoracic echocardiography, right-heart catheterization and cardiac magnetic resonance imaging revealed mimicking severe pulmonary embolism in the pulmonary trunk and right pulmonary artery, with symptoms including chest pain, cough and breathing difficulties...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454453/targeting-assay-of-a-fusion-protein-applied-in-enzyme-prodrug-therapy
#4
Hao Wang, Jin-Jian Liu, Xiao-Liang Zhou
Tumor growth and metastasis are dependent on angiogenesis. The overexpression of integrin αvβ3 on angiogenic vessels and on numerous malignant human tumor cells suggests that these labeled ligands of integrin are potentially suitable for molecular imaging and in targeted therapy of tumors. In previous studies, we added a β-lactamase variant with reduced immunogenicity to the cyclic peptide RGD4C, resulting in the fusion protein RGD4CβL, which is suitable for use in targeted enzyme prodrug therapy (TEPT), a promising treatment for tumors...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454450/de-novo-myoepithelial-carcinoma-with-multiple-metastases-arising-from-a-submandibular-salivary-gland-a-case-report
#5
Karina Cecília Panelli Panelli Santos, Hidenobu Matsuzaki, Teruhisa Unetsubo, Shimo Tsuyoshi, Hitoshi Nagatsuka, Jun-Ichi Asaumi
Salivary gland carcinomas are rare tumors, representing ~0.5% of all malignancies. Myoepithelioma is also uncommon, representing ~1% of all salivary gland tumors. Myoepithelial carcinoma (MC) is even rarer, representing 0.2 to 0.6% of all salivary gland tumors. We herein report a case of MC with multiple metastases arising from a submandibular gland in a 71-year-old male patient and present the associated imaging findings. The patient was considered to have a de novo type of myoepithelial carcinoma, which is reportedly associated with higher malignancy than the transformation type of the disease (i...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454444/anterior-mediastinum-invasion-by-multiple-myeloma-a-case-report
#6
Ying-Hui Xu, Lu-Guo Sun, Chao Sun, Ou Bai, Ting-Ting Liang, Ke-Wei Ma
Multiple myeloma (MM) is a clonal proliferation of malignant plasma cells in the bone marrow (BM) that secretes monoclonal paraproteins in the blood serum and urine. Bone marrow MM cells can invade and damage the functions of other tissues and organs, such as the lungs, spleen, liver, pancreas, kidneys and lymph nodes. However, the invasion of MM cells primarily located in the BM to the anterior mediastinum at the site of the thymus is an extremely rare event. The current study reports the case of a 53-year-old female who presented with MM with involvement of the anterior mediastinum...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454393/diagnosing-and-discriminating-between-primary-and-secondary-aneurysmal-bone-cysts
#7
Hiromi Sasaki, Satoshi Nagano, Hirofumi Shimada, Masahiro Yokouchi, Takao Setoguchi, Yasuhiro Ishidou, Osamu Kunigou, Kosuke Maehara, Setsuro Komiya
Aneurysmal bone cysts (ABCs) are benign bony lesions frequently accompanied by multiple cystic lesions and aggressive bone destruction. They are relatively rare lesions, representing only 1% of bone tumors. The pathogenesis of ABCs has yet to be elucidated. In the present study, a series of 22 cases of primary and secondary ABC from patients treated in Department of Orthopedic Surgery, Kagoshima University Hospital (Kagoshima, Japan) from 2001-2015 were retrospectively analyzed. The average age at the time of diagnosis of primary ABC was 17...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454379/characterization-of-single-lesion-nonfunctioning-pancreatic-neuroendocrine-carcinoma-via-computed-tomography
#8
Jibo Hu, Qunhui Hu, Hongjie Hu
Nonfunctioning pancreatic neuroendocrine carcinoma (NPNEC) is a poorly differentiated neuroendocrine carcinoma and a rare type of pancreatic cancer. Computed tomography (CT)-based imaging is currently the most effective method for diagnosing and classifying NPNEC. The present study investigated the clinical features and CT manifestations of this disease. The CT manifestations and clinical data of 13 patients with NPNEC, confirmed by surgery or needle biopsy, were retrospectively analyzed. None of the 13 patients exhibited endocrine-related symptoms and a single lesion with a variable position in the pancreatic was observed in all patients...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454372/distinguishing-between-intramural-pregnancy-and-choriocarcinoma-a-case-report
#9
Shan Su, Devendra Chavan, Kun Song, Dennis Chi, Guiyu Zhang, Xiaohui Deng, Li Li, Beihua Kong
Intramural pregnancy is a rare type of ectopic pregnancy with an unclear etiology. It may be associated with uterine wall injury and/or abnormal uterine conditions, such as adenomyosis, in certain cases. In the present report, a case of intramural pregnancy associated with adenomyosis is discussed. The patient was 34 years old and presented with amenorrhea for 40 days. Ultrasonography and magnetic resonance imaging revealed a mixed echogenic mass located within the posterior wall of the uterine fundus with abundant blood flow...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454324/stathmin-1-promotes-the-proliferation-and-malignant-transformation-of-pancreatic-intraductal-papillary-mucinous-neoplasms
#10
Akira Watanabe, Kenichiro Araki, Takehiko Yokobori, Bolag Altan, Norihiro Ishii, Mariko Tsukagoshi, Norio Kubo, Fumiyoshi Saito, Hideki Suzuki, Hiroyuki Kuwano
Pancreatic intraductal papillary mucinous neoplasms (IPMNs) are a type of pancreatic tumor, which have been identified following improvements in diagnostic imaging. However, the malignant transformation of IPMN has been difficult to diagnose clinically. To date, the mechanisms driving the progression of IPMN to cancer remain to be fully elucidated. The present study focused on Stathmin 1 (STMN1), a protein that is associated with the development of various types of cancer. The expression of STMN1 was examined immunohistochemically in tissues from cases of IPMN...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454289/iris-metastasis-as-the-first-sign-of-small-cell-lung-cancer-a-case-report
#11
Shi-Liang Liu, Yu-Hong Nie, Tao He, Xi-Xi Yan, Yi-Qiao Xing
The current study documents an unusual case of iris metastasis as the first sign of small cell lung cancer (SCLC) and reviews the relevant literature to increase understanding and awareness of this rare condition. A 59-year-old male chronic smoker presented with a painful and red right eye without any disturbance of vision. The patient also complained of associated chronic cough and anorexia. Upon examination, an exfoliative, pinkish-white lesion of the right iris was observed. A systemic work-up was performed, which incidentally detected metastatic SCLC in the lower lobe of the right lung and was confirmed by histopathological examination...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454285/stereotactic-radiosurgery-for-brain-metastasis-from-gynecological-malignancies
#12
Ekkehard Kasper, Franziska Ippen, Eric Wong, Eric Uhlmann, Scott Floyd, Anand Mahadevan
Brain metastases are relatively uncommon in gynecological malignancies, and there is limited available data on their management. The present study reports the outcomes of patients with brain metastasis from gynecological malignancies who were treated with stereotactic radiosurgery (SRS). Patients with brain metastasis from a gynecological primary site were treated with SRS using the Cyberknife™ frameless SRS system. Primary lesions were treated with a single fraction of 16-22 Gy. A total of 3 resection cavities were treated with 8 Gy 3 times, meaning a total of 24 Gy, and 1 recurrent lesion was re-irradiated with 5 Gy 5 times, meaning a total of 25 Gy...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454280/imaging-findings-of-extraventricular-choroid-plexus-papillomas-a-study-of-10-cases
#13
Yuzhen Shi, Xiaoshuang Li, Xiao Chen, Yiming Xu, Genji Bo, Hao Zhou, Yongkang Liu, Guoxing Zhou, Zhongqiu Wang
Extraventricular choroid plexus papillomas (CPPs) are rare. In this study, we reveal the imaging findings of CPPs located in extraventricular sites. The imaging findings of 11 masses [10 masses on magnetic resonance imaging (MRI) and one mass on computed tomography (CT)] of extraventricular CPP in 10 patients were retrospectively observed. The mass site, size, contour, signal intensity, cystic or solid appearance, calcification, capsules, degree and pattern of enhancement, and hydrocephalus were evaluated based on CT or MRI...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454259/intentional-marginal-resection-of-periosteal-osteosarcoma-in-combination-with-neoadjuvant-chemotherapy-a-report-of-two-cases-and-a-review-of-the-literature
#14
Yu Chen, Song-Feng Xu, Ming Xu, Xiu-Chun Yu
A wide resection of the tumor with or without chemotherapy is the treatment of choice for periosteal osteosarcoma (PO) of the extremities, however, post-operative limb function and quality of life could be compromised. The present study reports two cases of 14-year-old boys who presented with progressively enlarging masses in their right knee regions. Computed tomography and magnetic resonance imaging scans indicated a fusiform space-occupying mass encircling the bone cortex, with stippled calcification. A diagnosis of PO was suspected...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454254/oculomotor-nerve-palsy-as-a-preceding-symptom-of-adult-sporadic-burkitt-lymphoma-a-case-report-and-review-of-the-literature
#15
Yun Liang, Luyin Ding, Xian Li, Weiqin Wang, Xiaohong Zhang
Adult sporadic Burkitt lymphoma (BL) is a rare aggressive neoplasm and represents ~1-5% of all lymphomas diagnosed in adults. The disease exhibits an aggressive clinical manifestation, which frequently involves the central nervous system (CNS) in the early stages, and is usually accompanied by abnormalities in cerebrospinal fluid (CSF) examinations and/or neuroradiography. The current study describes the rare case of a 29-year-old man who presented with oculomotor nerve palsy without palpated masses, B symptoms, peripheral blood anomaly and abnormalities of the nervous system...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454248/primary-bone-mantle-cell-lymphomas-with-multiple-vertebral-compression-fractures-a-case-report
#16
Peng Yang, Jun Lin, Hao Liu, Hao Shen, Hui-Lin Yang
Mantle cell lymphoma (MCL) is a mature B-cell non-Hodgkin lymphoma. Patients with MCL generally present with extensive lymphadenopathy and extranodal involvement. To the best of our knowledge, no cases of primary bone MCL with multiple vertebral compression fractures have been reported in the literature thus far. The current study reports the case of a 75-year-old Chinese male patient presenting with lower back pain for 1 year. B symptoms were not observed in the patient's medical history. X-ray revealed osteoporosis, and mixed osteolytic and osteosclerotic lesions in the T10 and L1 vertebrae with decreased height...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454245/improving-contrast-enhancement-in-magnetic-resonance-imaging-using-5-aminolevulinic-acid-induced-protoporphyrin-ix-for-high-grade-gliomas
#17
Junkoh Yamamoto, Shingo Kakeda, Tetsuya Yoneda, Shun-Ichiro Ogura, Shohei Shimajiri, Tohru Tanaka, Yukunori Korogi, Shigeru Nishizawa
Magnetic resonance imaging (MRI) with a gadolinium-based contrast agent is the gold standard for high-grade gliomas (HGGs). The compound 5-aminolevulinic acid (5-ALA) undergoes a high rate of cellular uptake, particularly in cancer cells. In addition, fluorescence-guided resection with 5-ALA is widely used for imaging HGGs. 5-ALA is water soluble, while protoporphyrin IX (PpIX) is water insoluble. It was speculated whether converting from 5-ALA to PpIX may relatively increase intracellular water content, and consequently, might enhance the T2 signal intensity in HGG...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454230/a-subpopulation-of-cancer-stem-cells-identifies-radiographic-characteristics-in-glioblastoma
#18
Ja Eun Kim, Sung Kwon Kim, Jaekyung Shin, Young-Bem Se, Seung Hong Choi, Sung-Hye Park, Seung Ah Choi, Ji Yeoun Lee, Ji Hoon Phi, Kyu-Chang Wang, Chul-Kee Park, Seung-Ki Kim
Cancer stem cells (CSCs), defined by CD133 expression, harbor heterogeneous subpopulations of cells, including endothelial progenitor cells (EPCs). This study aimed to investigate whether a subpopulation of CSCs could affect the radiographic characteristics of glioblastoma. Tissue samples from 10 patients newly diagnosed with glioblastoma were selected according to the radiographic characteristics of their tumors. The patients were divided into two groups based on preoperative magnetic resonance imaging demonstrating contrast enhancement, necrosis and infiltrative patterns: the enhancement/necrosis group (E/N, n=5) and the non-enhancement/infiltration group (NE/I, n=5)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454218/stereotactic-body-radiation-therapy-for-oligoprogression-of-metastatic-disease-from-gastrointestinal-cancers-a-novel-approach-to-extend-chemotherapy-efficacy
#19
Justin Wray, Rana Fawzi Hawamdeh, Nalini Hasija, Roi Dagan, Anamaria R Yeung, Judith L Lightsey, Paul Okunieff, Karen C Daily, Thomas J George, Robert A Zlotecki, Jose Trevino, Long H Dang
Chemotherapy and targeted therapies are effective palliative options for numerous unresectable or metastatic cancers. However, treatment resistance inevitably develops leading to mortality. In a subset of patients, systemic therapy appears to control the majority of tumors leaving 5 or less to progress, a phenomenon described as oligoprogression. Reasoning that the majority of lesions remain responsive to ongoing systemic chemotherapy, we hypothesized that local treatment of the progressing lesions would confer a benefit...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454187/combination-of-transforaminal-and-interlaminar-percutaneous-endoscopic-lumbar-diskectomy-for-extensive-down-migrated-disk-herniation
#20
Kyung-Chul Choi, Jung Hyun Lee, Jin-Sung Kim, Dong Chan Lee, Choon Keun Park
Background and Study Aims The technique and instrumentation of percutaneous endoscopic lumbar diskectomy (PELD) have significantly improved. Thus its indications have been gradually expanding. Down-migrated disk, in particular, is regarded inaccessible by rigid instrumentation due to poor visualization and limited accessibility. We introduce a combination of transforaminal and interlaminar PELD for extensive down-migrated disk herniation at the L4-L5 level. Patients and Methods In the first case, a 48-year-old man had left L5 radicular pain...
April 28, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
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