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https://www.readbyqxmd.com/read/28329600/delay-in-diagnosis-of-acral-melanoma
#1
Roberto Rheingantz da Cunha Filho, Leandra Matte, Ricardo Hohmann Camina
We report a 41-year-old woman presented with a 4-year history of an exuberant, erythematous tumor, with necrotic appearance of the right distal toe. The histopathology examination showed a nodular-ulcerative melanoma, with bone infiltration. Widespread metastases including the right ovary, peritoneum, and right breast were present. The patient was misdiagnosed for almost 4 years as having onychomycosis, ingrown nail and pyogenic granuloma.
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328842/three-dimensional-printing-and-computer-navigation-assisted-hemipelvectomy-for-en-bloc-resection-of-osteochondroma-a-case-report
#2
Yaqing Zhang, Lianjiang Wen, Jun Zhang, Guoliang Yan, Yue Zhou, Bo Huang
RATIONALE: Three-dimensional (3D) printed templates can be designed to match an individual's anatomy, allowing surgeons to refine preoperative planning. In addition, the use of computer navigation (NAV) is gaining popularity to improve surgical accuracy in the resection of pelvic tumors. However, its use in combination with 3D printing to assist complex pelvic tumor resection has not been reported. PATIENT CONCERNS: A 36-year-old man presented with left-sided pelvic pain and a fast-growing mass...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327466/regional-deep-hyperthermia-impact-of-observer-variability-in-ct-based-manual-tissue-segmentation-on-a-simulated-temperature-distribution
#3
Bassim Aklan, Josefin Hartmann, Diana Zink, Hadi Siavooshhaghighi, Ricarda Merten, Florian Putz, Oliver Ott, Rainer Fietkau, Christoph Bert
The aim of this study was to systematically investigate the influence of inter- and intra-observer segmentation variation of tumor and organs at risk on the simulated temperature coverage of the target. CT scans of six patients with tumors in the pelvic region acquired for radiotherapy treatment planning were used for the hyperthermia treatment planning. To study the effect of inter-observer variation, three observers manually segmented in the CT images of each patient the following structures: fat, muscle, bone and bladder...
March 22, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28327204/lung-adenocarcinoma-with-thyroid-metastasis-a-case-report
#4
A Dao, H Jabir, A Taleb, N Benchakroun, Z Bouchbika, T Nezha, H Jouhadi, S Sahraoui, A Benider
BACKGROUND: The metastases of a primary lung cancer over the thyroid gland are extremely rare. We report on an unusual presentation of thyroid metastasis of lung cancer in order to improve the management of similar cases. CASE PRESENTATION: Three years ago, a Moroccan male 59-year-old was admitted for dyspnea, dry cough, and chest pain. He had smoked about 30 cigarette packs a year. Clinical examination revealed a right thyroid nodule. Chest and neck computed tomography (CT) scan showed a proximal left tumor in contact with the pulmonary artery and revealed a suspected nodule in the right lobe of the thyroid with homolateral neck node...
March 21, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28326999/nicaraven-a-potential-radioprotective-agent-has-very-limited-effects-on-the-survival-of-cancer-cells-and-the-growth-of-established-tumors
#5
Chen Yan, Lan Luo, Yoshishige Urata, Shinji Goto, Chang-Ying Guo, Tao-Sheng Li
Radiotherapy is one of the major treatment modalities for the management of various cancers, however, it is limited by the severe side effects and complications experienced by some patients. Nicaraven, a chemically synthesized hydroxyl radical-specific scavenger, has been shown to protect normal tissues from radiation-induced injury. We investigated the role of nicaraven in cancer cells and tumor growth. While nicaraven did not significantly change the colony-forming abilities and DNA damage levels in several cancer cell lines after irradiation, it significantly protected mouse bone marrow-derived hematopoietic stem cells from radiation injury...
March 2017: Radiation Research
https://www.readbyqxmd.com/read/28326931/overexpression-of-suppressor-of-cytokine-signaling-3-in-dorsal-root-ganglion-attenuates-cancer-induced-pain-in-rats
#6
Jinrong Wei, Meng Li, Dieyu Wang, Hongyan Zhu, Xiangpeng Kong, Shusheng Wang, You-Lang Zhou, Zhong Ju, Guang-Yin Xu, Guo-Qin Jiang
Background Cancer-induced pain (CIP) is one of the most severe types of chronic pain with which clinical treatment remains challenging and the involved mechanisms are largely unknown. Suppressor of cytokine signaling 3 (SOCS3) is an important intracellular protein and provides a classical negative feedback loop, thus involving in a wide variety of processes including inflammation and nociception. However, the role of SOCS3 pathway in CIP is poorly understood. The present study was designed to investigate the role of SOCS3 in dorsal root ganglion (DRG) in the development of CIP...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326824/osteopontin-its-potential-role-in-cancer-of-children-and-young-adults
#7
Gabrielle Karpinsky, Aleksandra Fatyga, Malgorzata Anna Krawczyk, Madeleine Chamera, Natalia Sande, Dagmara Szmyd, Ewa Izycka-Swieszewska, Ewa Bien
OBJECTIVE: Osteopontin (OPN) is aglyco-phosphoprotein, involved in tissue remodeling, inflammation and boneresorption. In various adult neoplasms OPN was shown to correlate with cancer progression, invasiveness and metastasis. AIM: to define the role of OPN in malignancies of children and young adults. MATERIAL AND METHODS: a structured PubMed and Google Scholar literature analysis based on reports published in English between I'1995 and XII'2015...
March 14, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28326487/enhanced-stim1-expression-is-associated-with-acquired-chemo-resistance-of-cisplatin-in-osteosarcoma-cells
#8
Xilong Sun, Qiang Wei, Jie Cheng, Yanzhu Bian, Congna Tian, Yujing Hu, Huijie Li
Osteosarcoma is the most common primary malignant bone tumor. Although cisplatin is the primary chemotherapy used in osteosarcoma treatment, the cisplatin resistance remains a big challenge for improving overall survival. The store-operated calcium (Ca(2+)) entry (SOCE) and its major mediator Stim1 have been shown to be implicated in a number of pathological processes typical for cancer. In this study, we showed that Stim1 expression was significantly increased in chemo-resistant osteosarcoma tissues compared with chemo-sensitivity tissues...
March 22, 2017: Human Cell
https://www.readbyqxmd.com/read/28326216/an-unusual-clinical-presentation-of-solitary-fibrous-tumor-in-the-oral-cavity
#9
Everton Freitas de Morais, Deborah Gondim Lambert Moreira, Viviane Alves De Oliveira, Rodrigo Rodrigues Rodrigues, Adriano Rocha Germano, Roseana de Almeida Freitas
Solitary fibrous tumor is a rare neoplasm of mesenchymal origin that usually affects the pleura. This rarity becomes more relevant in the oral cavity since the clinical features are nonspecific. A 66-year-old female patient presented with a 3-month history of a swelling in the floor of the mouth, measuring 2 cm in greatest diameter, and pain symptomatology. Occlusal and panoramic radiographs showed no bone involvement. Ultrasonography of the submandibular and parotid salivary glands revealed normal morphology, dimensions, and echogenicity...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28325212/chemokine-receptor-signaling-and-the-hallmarks-of-cancer
#10
R A Lacalle, R Blanco, L Carmona-Rodríguez, A Martín-Leal, E Mira, S Mañes
The chemokines are a family of chemotactic cytokines that mediate their activity by acting on seven-transmembrane-spanning G protein-coupled receptors. Both the ability of the chemokines and their receptors to form homo- and heterodimers and the promiscuity of the chemokine-chemokine receptor interaction endow this protein family with enormous signaling plasticity and complexity that are not fully understood at present. Chemokines were initially identified as essential regulators of homeostatic and inflammatory trafficking of innate and adaptive leucocytes from lymphoid organs to tissues...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28324880/fine-needle-aspiration-cytology-of-diffuse-type-tenosynovial-giant-cell-tumors
#11
Zimin Zhao, Cherie Paquette, Akeesha A Shah, Kristen A Atkins, Henry F Frierson
BACKGROUND: Tenosynovial giant cell tumor (TSGCT), also known as giant cell tumor of tendon sheath or pigmented villonodular synovitis, is the most common benign tumor of the tendon and synovium. The intra-articular diffuse type can present as a large infiltrative mass involving adjacent soft tissue and sometimes causes secondary destruction of bone, which leads to radiographic and clinical concern for malignancy. The tumor may also be purely extra-articular. CASE: Here, we report the fine needle aspiration cytology findings of 2 cases of diffuse-type TSGCT with large mononuclear cells with eccentric nuclei, finely granular cytoplasm, and a peripheral well-defined cytoplasmic rim of hemosiderin ("ladybird cells")...
March 22, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28324746/denosumab-in-advanced-unresectable-giant-cell-tumour-of-bone-gctb-for-how-long
#12
E Palmerini, N S Chawla, S Ferrari, M Sudan, P Picci, E Marchesi, M Piccinni Leopardi, I Syed, K K Sankhala, P Parthasarathy, W E Mendanha, M Pierini, A Paioli, S P Chawla
BACKGROUND: Giant-cell tumours of bone (GCTB) are RANK/RANK-ligand (RANKL) positive, aggressive and progressive osteolytic tumours. Denosumab, a RANKL inhibitor, was FDA-approved for adults and skeletally mature adolescents with unresectable GCTB or when surgical resection is likely to result in severe morbidity. Data on long-term toxicity and activity of denosumab monthly 'GCTB-schedule' (120 mg per 12/year, 1440 mg total dose/year) are lacking. METHODS: Patients with GCTB receiving denosumab, 120 mg on days 1, 8, 15, 29 and every 4 weeks thereafter, from 2006 to 2015 treated in two centres were included...
March 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28324272/lusutrombopag-increases-hematocytes-in-a-compensated-liver-cirrhosis-patient
#13
Akira Sakamaki, Takayuki Watanabe, Satoshi Abe, Kenya Kamimura, Atsunori Tsuchiya, Masaaki Takamura, Hirokazu Kawai, Satoshi Yamagiwa, Shuji Terai
A 56-year-old Japanese man with liver cirrhosis (LC) due to hepatitis C virus was admitted to our hospital for radiofrequency ablation of residual tumor following lusutrombopag administration. Laboratory tests revealed thrombocytopenia and leukopenia. The patient's LC was managed, and he was classified as Child-Pugh A. After admission, lusutrombopag was administered for 7 days. The platelet count increased to over 50,000/mm(3) after 7-14 days and returned to previous levels 50 days after administration. Leukocyte and erythrocyte counts also increased in response to the treatment and stayed elevated for over 120 days...
March 21, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28324052/skeletal-complications-and-mortality-in-thyroid-cancer-a-population-based-study
#14
Palak Choksi, Maria Papaleontiou, Cui Guo, Francis Worden, Mousumi Banerjee, Megan Haymart
Context: Although bone is a common site for tumor metastases, the burden of bone events (bone metastases and skeletal-related events (SREs)) in patients with thyroid cancer is not well known. Objective: To measure the prevalence of bone events and their impact on mortality in patients with thyroid cancer. Patients, Design, and Setting: We identified patients diagnosed with thyroid cancer between 1991-2011 from the linked Surveillance Epidemiology and End Results-Medicare (SEER-Medicare) dataset...
January 25, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323657/histology-and-gadolinium-distribution-in-the-rodent-brain-after-the-administration-of-cumulative-high-doses-of-linear-and-macrocyclic-gadolinium-based-contrast-agents
#15
Jessica Lohrke, Anna-Lena Frisk, Thomas Frenzel, Laura Schöckel, Martin Rosenbruch, Gregor Jost, Diana Constanze Lenhard, Martin A Sieber, Volker Nischwitz, Astrid Küppers, Hubertus Pietsch
OBJECTIVES: Retrospective studies in patients with primary brain tumors or other central nervous system pathologies as well as postmortem studies have suggested that gadolinium (Gd) deposition occurs in the dentate nucleus (DN) and globus pallidus (GP) after multiple administrations of primarily linear Gd-based contrast agents (GBCAs). However, this deposition has not been associated with any adverse effects or histopathological alterations. The aim of this preclinical study was to systematically examine differences between linear and macrocyclic GBCAs in their potential to induce changes in brain and skin histology including Gd distribution in high spatial resolution...
March 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28322342/therapy-targeted-to-the-metastatic-niche-is-effective-in-a-model-of-stage-iv-breast-cancer
#16
Byunghee Yoo, Amol Kavishwar, Ping Wang, Alana Ross, Pamela Pantazopoulos, Michael Dudley, Anna Moore, Zdravka Medarova
Treatment of stage IV metastatic breast cancer patients is limited to palliative options and represents an unmet clinical need. Here, we demonstrate that pharmacological inhibition of miRNA-10b - a master regulator of metastatic cell viability - leads to elimination of distant metastases in a mouse model of metastatic breast cancer. This was achieved using the miRNA-10b inhibitory nanodrug, MN-anti-miR10b, which consists of magnetic nanoparticles, conjugated to LNA-based miR-10b antagomirs. Intravenous injection of MN-anti-miR10b into mice bearing lung, bone, and brain metastases from breast cancer resulted in selective accumulation of the nanodrug in metastatic tumor cells...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322198/multiple-and-recurrent-squamous-cell-carcinoma-of-the-oral-cavity-after-graft-versus-host-disease
#17
Xiu Hong Weng, Yu Zhen Xing, Bo Cheng
Oral squamous cell carcinoma (OSCC) is one of the most common secondary solid tumors in patients who have undergone hematopoietic stem cell transplantation (HSCT). However, according to previous reports, multiple and recurrent OSCC is very rare. The presented case shows the susceptibility to the development of secondary malignancies, particularly oral cancer, of patients who present with chronic graft-versus-host disease after HSCT. OSCC after HSCT appears to be more invasive and has a tendency to recur, with a poor prognosis...
February 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28321692/oncologic-outcome-and-quality-of-life-after-hindquarter-amputation-for-sarcoma-is-it-worth-it
#18
Winan J van Houdt, Anthony M Griffin, Jay S Wunder, Peter C Ferguson
BACKGROUND AND OBJECTIVE: Hindquarter amputations for bone or soft tissue sarcoma cause a high degree of disability. The goal of this study was to analyze oncologic outcome and quality of life after resection in order to better select patients who are more likely to benefit from this operation. METHODS: Patients treated with a hindquarter amputation between 1989 and 2015 for a bone or soft tissue sarcoma were selected from our database. Clinical and histopathological features were analyzed for their prognostic value using Kaplan-Meier and Cox proportional hazard analysis...
March 20, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28321374/ectopic-pituitary-adenomas-presenting-as-sphenoid-or-clival-lesions-case-series-and-management-recommendations
#19
Bobby A Tajudeen, Edward C Kuan, Nithin D Adappa, Joseph K Han, Rakesh K Chandra, James N Palmer, David W Kennedy, Marilene B Wang, Jeffrey D Suh
Background An ectopic pituitary adenoma presenting as a clival or sphenoid mass is a rare clinical occurrence that may mislead the clinician and result in unnecessary interventions or potential medicolegal consequences. Here, we present one of the largest multi-institutional case series and review the literature with an emphasis on radiological findings and critical preoperative workup. Methods Retrospective chart review. Results Nine patients were identified with ectopic pituitary adenomas of the sphenoid or clivus...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28321122/the-emerging-roles-of-tumor-derived-exosomes-in-hematological-malignancies
#20
REVIEW
M Boyiadzis, T L Whiteside
Exosomes are small (30-150 nm) membranous vesicles of endocytic origin produced by all cells under physiological and pathological conditions. They have recently emerged as vehicles for intercellular transfer of molecular and genetic contents from parent to recipient cells. Exosome-mediated transfer of proteins or genes (RNA, miRNA, DNA) results in reprogramming of recipient cell functions. Exosomes carry and deliver information that is essential for health, and they participate in pathological events, including malignant transformation...
March 21, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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