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https://www.readbyqxmd.com/read/27932557/quantitative-parameters-in-psma-targeted-pet-imaging-with-18f-dcfpyl-variability-in-normal-organ-uptake
#1
Xin Li, Steven P Rowe, Jeffrey P Leal, Michael A Gorin, Mohamad E Allaf, Ashley E Ross, Kenneth J Pienta, Martin A Lodge, Martin G Pomper
PURPOSE: (18)F-DCFPyL is a small-molecule inhibitor of the prostate-specific membrane antigen (PSMA) that has shown promise for evaluation of primary and metastatic prostate cancer (PC) using positron emission tomography (PET). Measuring the variability in normal organ uptake of (18)F-DCFPyL is necessary to understand its biodistribution, aid image interpretation, judge the reliability of scan quantification, and to provide a basis for therapeutic monitoring. METHODS: 65 consecutive (18)F-DCFPyL PET/CT scans from 64 patients with a history of PC were analyzed...
December 8, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27890427/internal-and-external-generalizability-of-temporal-dose-response-relationships-for-xerostomia-following-imrt-for-head-and-neck-cancer
#2
Maria Thor, Adepitan A Owosho, Haley D Clark, Jung Hun Oh, Nadeem Riaz, Allan Hovan, Jillian Tsai, Steven D Thomas, Sae Hee K Yom, Jonn S Wu, Joseph M Huryn, Vitali Moiseenko, Nancy Y Lee, Cherry L Estilo, Joseph O Deasy
BACKGROUND AND PURPOSE: To study internal and external generalizability of temporal dose-response relationships for xerostomia after intensity-modulated radiotherapy (IMRT) for head and neck cancer, and to investigate potential amendments of the QUANTEC guidelines. MATERIAL AND METHODS: Objective xerostomia was assessed in 121 patients (nCohort1=55; nCohort2=66) treated to 70Gy@2Gy in 2006-2015. Univariate and multivariate analyses (UVA, MVA with 1000 bootstrap populations) were conducted in Cohort1, and generalizability of the best-performing MVA model was investigated in Cohort2 (performance: AUC, p-values, and Hosmer-Lemeshow p-values (pHL))...
November 24, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27888340/prognostic-value-of-comorbidities-in-patients-with-carcinoma-of-the-major-salivary-glands
#3
Christoph Becker, Kilian Konrad Kenjiro Dahlem, Jens Pfeiffer
This study aimed at evaluating the influence of comorbidities on outcome and survival in patients with carcinoma of the major salivary glands. Medical records of 109 patients with carcinoma of the major salivary glands treated at a single quaternary medical care and cancer center between 2003 and 2015 were reviewed. Comorbidities were classified according to the Age-Adjusted Charlson Comorbidity Index (ACCI) scoring system. 59 patients were males, 50 were females. Median age was 69 years and the median interval between tumor diagnosis and date of study inclusion was 71 months...
November 25, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27875710/vascularized-fascia-lata-for-prevention-of-postoperative-parotid-fistula-arising-from-partial-parotidectomy-during-neck-dissection
#4
Lijuan Zeng, Canhua Jiang, Ning Li, Wen Liu, Fei Wang, Feng Guo
PURPOSE: Postoperative parotid fistula can occur after partial parotidectomy, which is a routine surgical procedure during neck dissection of oral cancers arising from or close to the oropharyngeal area. The aim of this study was to evaluate the reliability of vascularized fascia lata for the prevention of postoperative parotid fistula after neck dissection. MATERIALS AND METHODS: A retrospective review was conducted of patients with oral cancer who underwent ablative resection involving the parotid tail and reconstruction using the anterolateral thigh (ALT) flap with a vascularized fascia lata paddle...
October 28, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27872134/metastatic-trichilemmal-carcinoma-in-a-patient-with-breast-cancer
#5
Chrysis Sofianos, Nkhensani Y Chauke, Alexandra Grubnik
Trichilemmal carcinoma (TC) is described as a very rare cancer of the skin adnexa.(1 2) Ninety per cent of the lesions present on the scalp. Prognostic factors in TC are limited to lymph node status and surgical margins, with no statistical significance observed for age or gender of the patient, size of tumour or locoregional recurrence. We present a 46-year-old black patient who developed TC during treatment for breast cancer. Postoperative histology of the scalp lesion excision confirmed no involved margins...
November 21, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27798906/radiation-induced-parotid-gland-atrophy-in-patients-with-head-and-neck-cancer-after-carbon-ion-radiotherapy
#6
Takamichi Morikawa, Masashi Koto, Azusa Hasegawa, Ryo Takagi, Akira Fujikawa, Hiroshi Tsuji, Takahiko Shibahara, Tadashi Kamada
BACKGROUND/AIM: This study aimed to clarify the relationship between dosimetric factors and parotid gland (PG) atrophy after carbon ion radiotherapy (C-ion RT). PATIENTS AND METHODS: Fifty-four patients with head and neck tumours were enrolled and 93 irradiated PGs were analyzed. Thirty and 24 patients were treated with total doses [relative biological effectiveness (RBE)] of 57.6 Gy and 64.0 Gy, respectively, in 16 fractions. PG volumes were measured using computed tomographic images obtained before C-ion RT and every 3-6 months thereafter...
October 2016: Anticancer Research
https://www.readbyqxmd.com/read/27793123/invasive-myoepithelial-carcinoma-ex-pleomorphic-adenoma-of-the-major-salivary-gland-two-case-reports
#7
Takahiro Wakasaki, Marie Kubota, Yutaka Nakashima, Eri Tomonobe, Takenao Mihara, Junichi Fukushima
BACKGROUND: Myoepithelial carcinoma (MEC) is a rare salivary gland tumor. Its long-term prognosis remains unknown because of the paucity of reported cases with long-term follow-up. Although some case series exist, the clinical features of MEC vary considerably depending on the site of origin. Therefore, accumulation of these rare cases is important. CASE PRESENTATION: Case 1: An 89-year-old man presented with a 10-year history of a mass originating from the right parotid gland and involving the neck...
October 28, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27782913/post-therapeutic-dosimetry-of-177lu-dkfz-psma-617-in-the-treatment-of-patients-with-metastatic-castration-resistant-prostate-cancer
#8
Madhav P Yadav, Sanjana Ballal, Madhavi Tripathi, Nishikant A Damle, Ranjit K Sahoo, Amlesh Seth, Chandrasekhar Bal
OBJECTIVE: Lu-DKFZ-PSMA-617, a urea-based compound, binds to the extracellular domain of prostate-specific membrane antigen, thus providing an effective target for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Before its therapeutic use, it is necessary that the radiation dosimetry of this radiopharmaceutical be studied to determine the safe activity that can be administered in patients to prevent haematological, renal and liver toxicity. The present study thus aimed to assess the pharmacokinetics and dosimetry of Lu-DKFZ-PSMA-617 in CRPC patients...
January 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27782691/technical-note-scuda-a-software-platform-for-cumulative-dose-assessment
#9
Seyoun Park, Todd McNutt, William Plishker, Harry Quon, John Wong, Raj Shekhar, Junghoon Lee
PURPOSE: Accurate tracking of anatomical changes and computation of actually delivered dose to the patient are critical for successful adaptive radiation therapy (ART). Additionally, efficient data management and fast processing are practically important for the adoption in clinic as ART involves a large amount of image and treatment data. The purpose of this study was to develop an accurate and efficient Software platform for CUmulative Dose Assessment (scuda) that can be seamlessly integrated into the clinical workflow...
October 2016: Medical Physics
https://www.readbyqxmd.com/read/27765457/a-machine-learning-tool-for-re-planning-and-adaptive-rt-a-multicenter-cohort-investigation
#10
G Guidi, N Maffei, B Meduri, E D'Angelo, G M Mistretta, P Ceroni, A Ciarmatori, A Bernabei, S Maggi, M Cardinali, V E Morabito, F Rosica, S Malara, A Savini, G Orlandi, C D'Ugo, F Bunkheila, M Bono, S Lappi, C Blasi, F Lohr, T Costi
PURPOSE: To predict patients who would benefit from adaptive radiotherapy (ART) and re-planning intervention based on machine learning from anatomical and dosimetric variations in a retrospective dataset. MATERIALS AND METHODS: 90 patients (pts) treated for head-neck cancer (H&N) formed a multicenter data-set. 41 H&N pts (45.6%) were considered for learning; 49 pts (54.4%) were used to test the tool. A homemade machine-learning classifier was developed to analyze volume and dose variations of parotid glands (PG)...
October 17, 2016: Physica Medica: PM
https://www.readbyqxmd.com/read/27765327/comparison-of-mean-radiation-dose-and-dosimetric-distribution-to-tooth-bearing-regions-of-the-mandible-associated-with-proton-beam-radiation-therapy-and-intensity-modulated-radiation-therapy-for-ipsilateral-head-and-neck-tumor
#11
Adepitan A Owosho, SaeHee K Yom, Zhiqiang Han, Kevin Sine, Nancy Y Lee, Joseph M Huryn, Cherry L Estilo
OBJECTIVE: The purpose of this study was to compare the dosimetric distribution of ipsilateral proton beam radiation therapy (PBRT) with intensity-modulated radiation therapy (IMRT) in the tooth-bearing region of the mandible in patients with head and neck cancer (HNC). STUDY DESIGN: The mandibular dosimetric distribution in patients with head and neck cancer treated with ≥60 Gy relative biologic equivalent PBRT was evaluated. The mean radiation doses were calculated in 5 regions: ipsilateral molar, ipsilateral premolar, anterior, contralateral premolar, and contralateral molar (CM) regions...
November 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/27755404/carcinoma-ex-pleomorphic-adenoma-of-the-tongue-difficulty-in-diagnosis-between-metastasis-of-breast-cancer-and-salivary-tumor
#12
Yuki Sakamoto, Shuichi Fujita, Masaki Adachi, Hiroshi Sakamoto, Tomofumi Naruse, Souichi Yanamoto, Toru Ikeda, Masahiro Umeda
Carcinoma ex pleomorphic adenoma (CEPA) is a carcinoma that shows histologic evidence of arising in or from a benign pleomorphic adenoma. Carcinoma ex pleomorphic adenoma often occurs in parotid glands, but is extremely rarely in the tongue. A 53-year-old Japanese woman was referred to the Department of Oral and Maxillofacial Surgery, Nagasaki University Hospital, because of tumor of the right dorsum tongue. She had a history of surgery of breast cancer (invasive ductal carcinoma) and it was disseminated to the lung and bone...
October 14, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27737447/optimal-perioperative-care-in-major-head-and-neck-cancer-surgery-with-free-flap-reconstruction-a-consensus-review-and-recommendations-from-the-enhanced-recovery-after-surgery-society
#13
Joseph C Dort, D Gregory Farwell, Merran Findlay, Gerhard F Huber, Paul Kerr, Melissa A Shea-Budgell, Christian Simon, Jeffrey Uppington, David Zygun, Olle Ljungqvist, Jeffrey Harris
Importance: Head and neck cancers often require complex, labor-intensive surgeries, especially when free flap reconstruction is required. Enhanced recovery is important in this patient population but evidence-based protocols on perioperative care for this population are lacking. Objective: To provide a consensus-based protocol for optimal perioperative care of patients undergoing head and neck cancer surgery with free flap reconstruction. Evidence Review: Following endorsement by the Enhanced Recovery After Surgery (ERAS) Society to develop this protocol, a systematic review was conducted for each topic...
October 13, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27729431/prognostic-relevance-of-epithelial-mesenchymal-transition-and-proliferation-in-surgically-treated-primary-parotid-gland-cancer
#14
Alina Busch, Larissa Bauer, Eva Wardelmann, Claudia Rudack, Inga Grünewald, Markus Stenner
AIMS: Cancer of the major salivary glands comprises a morphologically diverse group of rare tumours of largely unknown cause. Epithelial-mesenchymal transition (EMT) has been shown to play a significant prognostic role in various human cancers. The aim was to assess the expression of EMT markers in different histological subtypes of parotid gland cancer (PGC) and analyse their prognostic value. METHODS: We examined 94 PGC samples (13 histological subtypes) for the expression of MIB-1, epithelial cadherin (E-cadherin), β-catenin, vimentin and cytokeratin 8/18 (CK8/18) by means of immunohistochemistry...
October 11, 2016: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/27698923/validation-and-comparison-of-the-7-th-edition-of-the-american-joint-committee-on-cancer-staging-system-and-other-prognostic-models-to-predict-relapse-free-survival-in-asian-patients-with-parotid-cancer
#15
Chang-Hsien Lu, Chien-Ting Liu, Pei-Hung Chang, Kun-Yun Yeh, Chia-Yen Hung, Shau-Hsuan Li, Yung-Chang Lin, Ta-Sen Yeh, Yung-Shin Hung, Wen-Chi Chou
Purpose: Parotid cancer is a rare malignancy characterized by a heterogeneous histologic subtype and distinct biologic behavior. The present study aimed to externally validate and compare the performances of the American Joint Committee on Cancer (AJCC) staging system (7(th) Edition), Carrillo score, and Vander Poorten score in the prediction of tumor relapse probability in a large cohort of Asian parotid cancer patients. Methods: In total, 261 patients who underwent primary surgery for localized parotid cancer between 2002 and 2014 at the four affiliated hospitals of Chang Gung Memorial Hospital were identified...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27682856/multiple-clear-cell-acanthomas-and-a-sebaceous-lymphadenoma-presenting-in-a-patient-with-cowden-syndrome-a-case-report
#16
Silvia Potenziani, Danielle Applebaum, Bhuvaneswari Krishnan, Carolina Gutiérrez, A Hafeez Diwan
Cowden Syndrome (CS) is an uncommon autosomal dominant multiorgan/system genodermatosis. It is characterized by the development of multiple hamartomas of endodermal, mesodermal and ectodermal origin, an increased lifetime risk of breast, thyroid, endometrial, and other cancers and an identifiable germline mutation. Mucocutaneous hamartomas are the most common lesions seen and mainly include facial trichilemmomas, oral mucosal papillomas, and benign acral keratoses. Herein, we report a case of a 63-year-old Caucasian male with a long-established diagnosis of CS and history of thyroid cancer, colonic polyps, and innumerable trichilemmomas, seborrheic keratoses, squamous papillomas, and non-melanoma skin cancers excised in the past...
September 28, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27681762/head-and-neck-margin-reduction-with-adaptive-radiation-therapy-robustness-of-treatment-plans-against-anatomy-changes
#17
Simon van Kranen, Olga Hamming-Vrieze, Annelisa Wolf, Eugène Damen, Marcel van Herk, Jan-Jakob Sonke
PURPOSE: We set out to investigate loss of target coverage from anatomy changes in head and neck cancer patients as a function of applied safety margins and to verify a cone beam computed tomography (CBCT)-based adaptive strategy with an average patient anatomy to overcome possible target underdosage. METHODS AND MATERIALS: For 19 oropharyngeal cancer patients, volumetric modulated arc therapy treatment plans (2 arcs; simultaneous integrated boost, 70 and 54.25 Gy; 35 fractions) were automatically optimized with uniform clinical target volume (CTV)-to-planning target volume margins of 5, 3, and 0 mm...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27681761/methods-for-reducing-normal-tissue-complication-probabilities-in-oropharyngeal-cancer-dose-reduction-or-planning-target-volume-elimination
#18
Stuart E Samuels, Avraham Eisbruch, Karen Vineberg, Jae Lee, Choonik Lee, Martha M Matuszak, Randall K Ten Haken, Kristy K Brock
PURPOSE: Strategies to reduce the toxicities of head and neck radiation (ie, dysphagia [difficulty swallowing] and xerostomia [dry mouth]) are currently underway. However, the predicted benefit of dose and planning target volume (PTV) reduction strategies is unknown. The purpose of the present study was to compare the normal tissue complication probabilities (NTCP) for swallowing and salivary structures in standard plans (70 Gy [P70]), dose-reduced plans (60 Gy [P60]), and plans eliminating the PTV margin...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674520/a-new-and-early-indicator-based-on-dwi-to-dynamically-predict-and-evaluate-the-secret-function-of-parotid-glands-in-head-and-neck-cancer-patients-during-radiation-therapy
#19
J Lang, M Feng, F Wu, J Ren, M Wang, J Zhang, P Xu, X Lai, Z Fan
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674426/preliminary-clinical-evidence-of-parotid-subvolume-radiosensitivity-and-the-risk-of-radiation-induced-xerostomia-in-head-and-neck-cancer-hnc-patients
#20
H Quon, S Park, W Plishker, J W Wong, T R McNutt, R Shekhar, J Lee
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
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