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Scottsdale, AZ, United States

Djenic B.,Maricopa Medical Center | Duick D.,Endocrinology Associates | Newell J.O.,Scottsdale Pathology Consultants | Demeure M.J.,Translational Genomics Research Institute
International Journal of Surgery Case Reports | Year: 2015

Introduction Papillary (PTC) and follicular (FTC) thyroid carcinomas, together known as differentiated thyroid carcinomas (DTC), are among the most curable of cancers. Sites of metastases from FTC are usually osseous and those from PTC are in regional nodal basins and the lungs. Visceral metastases are rare and when they do occur, they tend do so in multiple sites. We present the case of a patient with a follicular variant of PTC and a solitary metastasis to the liver then review the relevant literature.Presentation of case An otherwise healthy 68-year-old woman was diagnosed with follicular variant papillary thyroid cancer in 2003 and subsequently underwent thyroidectomy. The patient's endocrinologist conducted surveillance of her thyroid cancer. In 2012, due to rise in thyroglobulin, a whole body radioiodine scan was obtained which revealed an iodine-avid left liver lobe mass. Three cycles of radioiodine ablation therapy were unsuccessful and eventually the patient was referred for surgical resection. Metastatic evaluation including a PET scan was negative with the exception of an isolated enhancing 4 cm mass in segment 4B of the liver. Anatomic segmental resection of liver was performed without complications. Intraoperative ultrasonography was used to guide resection of the liver mass. Pathology reports confirmed metastatic follicular variant of PTC. Surgical margins were free of tumor. Patient was discharged home and is doing well one year after surgery. The latest thyroglobulin level was undetectable.Discussion Post-operative surveillance by PCP, endocrinologist or surgeon for patients with thyroid carcinoma should be performed routinely. If identified, a solitary liver metastasis from primary thyroid carcinoma should be considered for surgical resection. Due to sparse data available in literature, collecting more data to establish algorithms for treatment of such rare metastatic cancers may be able to aid physicians to achieve better outcomes.Conclusion Rare distant sites of metastases from DTC include eyes, pharynx, skin, muscle, ovaries, adrenal glands, kidneys, esophagus, pancreas and liver. Isolated, resectable liver metastases from PTC are exceedingly rare. Literature review revealed only 10 reported cases of liver metastases from DTC. As in our patient, solitary liver metastasis from PTC should be considered for surgical resection which offers the best chance for prolonged survival. © 2014 Published by Elsevier Ltd.

Objective: To provide information on molecular biomarkers that can help assess cytologically indeterminate thyroid nodules.Methods: Published studies on immunohistologic, somatic mutation, gene expression classifier, microRNA, and thyrotropin receptor messenger RNA biomarkers are reviewed, and commercially available molecular test panels are described.Results: Thyroid nodules are common, and clinical guidelines delineate an algorithmic approach including serum thyroid-stimulating hormone measurement, diagnostic ultrasound examination, and, when appropriate, fine-needle aspiration (FNA) biopsy for determination of a benign versus malignant status. In clinical practice, approximately 20% of FNA-derived cytology reports are classified as "indeterminate" or follicular nodules that do not fulfill either benign or malignant criteria. In this setting, the actual risk for malignancy of a cytologically indeterminate nodule ranges from approximately 15% to 34%. Research describing molecular biomarkers from thyroid cancer tissue has been applied to FNA-derived thyroid nodule material. There is also a serum molecular marker that has been reported with goals similar to those for the FNA-derived molecular markers: to enhance the preoperative diagnosis of thyroid cancer and reduce the large number of patients who have a diagnostic surgical procedure for benign thyroid nodules.Conclusion: Progress toward the foregoing goals has been made and continues to evolve with the recent appearance of molecular biomarker tests that can be selectively applied for further assessment of cytologically indeterminate thyroid nodules. Copyright © 2012 AACE.

Dutt-Ballerstadt R.,Biotex, Inc. | Evans C.,Biotex, Inc. | Pillai A.P.,Biotex, Inc. | Orzeck E.,Endocrinology Associates | And 3 more authors.
Journal of Diabetes Science and Technology | Year: 2012

Objective: We report results of a pilot clinical study of a subcutaneous fluorescence afinity sensor (FAS) for continuous glucose monitoring conducted in people with type 1 and type 2 diabetes. The device was assessed based on performance, safety, and comfort level under acute conditions (4 h). Research Design and Methods: A second-generation FAS (BioTex Inc., Houston, TX) was subcutaneously implanted in the abdomens of 12 people with diabetes, and its acute performance to excursions in blood glucose was monitored over 4 h. After 30-60 min the subjects, who all had fasting blood glucose levels of less than 200 mg/dl, received a glucose bolus of 75 g/liter dextrose by oral administration. Capillary blood glucose samples were obtained from the finger tip. The FAS data were retrospectively evaluated by linear least squares regression analysis and by the Clarke error grid method. Comfort levels during insertion, operation, and sensor removal were scored by the subjects using an analog pain scale. Results: After retrospective calibration of 17 sensors implanted in 12 subjects, error grid analysis showed 97% of the paired values in zones A and B and 1.5% in zones C and D, respectively. The mean absolute relative error between sensor signal and capillary blood glucose was 13% [±15% standard deviation (SD), 100-350 mg/dl] with an average correlation coeficient of 0.84 (±0.24 SD). The actual average "warm-up" time for the FAS readings, at which highest correlation with glucose readings was determined, was 65 (±32 SD) min. Mean time lag was 4 (±5 SD) min during the initial operational hours. Pain levels during insertion and operation were modest. Conclusions: The in vivo performance of the FAS demonstrates feasibility of the fluorescence afinity technology to determine blood glucose excursions accurately and safely under acute dynamic conditions in humans with type 1 and type 2 diabetes. Specific engineering challenges to sensor and instrumentation robustness remain. Further studies will be required to validate its promising performance over longer implantation duration (5-7 days) in people with diabetes. © Diabetes Technology Society.

Oyer D.S.,Associates in Internal Medicine | Shepherd M.D.,Endocrinology Consultants | Coulter F.C.,Coulter Clinic | Bhargava A.,Iowa Diabetes and Endocrinology Center | And 3 more authors.
Clinical Therapeutics | Year: 2011

Background: The Initiation of Insulin to reach A1C Target (INITIATEplus) trial studied the effect of self-titrating biphasic insulin aspart 70/30 (BiAsp 30) twice daily during 24 weeks in insulin-naïve patients with type 2 diabetes who were poorly controlled by oral medication, and originally randomized according to frequency of dietary counseling interventions. Objective: The purpose of this study was to compare the efficacy and tolerability of biphasic insulin aspart 70/30 (BIAsp 30, NovoLog Mix 70/30) in INITIATEplus patients 65 versus >65 years old, irrespective of dietary counseling frequency, and to test the hypothesis that self-titrating BIAsp 30 in patients >65 years old could be well-tolerated and effective in this age group. Methods: An exploratory post hoc subanalysis, using standard statistical methods, was performed on patients stratified according to age. Data collected from 3492 patients in the intent-to-treat population who were 65 years old and 716 patients who were >65 years old compared glycosylated hemoglobin (HbA 1c) and plasma glucose changes from baseline. Hypoglycemia rates and adverse event (AE) incidence were compared for the tolerability population of 4007 patients 65 years old and 805 patients >65 years old. Results: Baseline-adjusted HbA 1c changes for patients 65 versus >65 years old were -2.38% versus -2.73% (P < 0.0001), with final HbA 1c achieving 7.55% and 7.06%, respectively. Thirty-nine percent of patients 65 years old achieved HbA 1c % compared with 51% of patients >65 years old. Baseline-adjusted fasting plasma glucose decreases were greater for the >65 year old population (85.2 vs 91.2 mg/dL; P = 0.004; 65 vs >65 years old, respectively). Minor hypoglycemia was reported in 9.7% and 7.7% of patients 5 versus >65 years old, respectively (0.52 vs 0.41 episodes per patient per year [ppy]; P = 0.01). Major hypoglycemia occurred in 1.5% and 3.1% of patients (0.05 vs 0.14 episodes ppy, 65 vs >65 years old, respectively; P < 0.0001). Nocturnal major hypoglycemia was reported for 0.4% and 0.6% of patients (P = 0.0028), whereas nocturnal minor hypoglycemia was reported for 3.8% and 2.6% (P = 0.007) of patients 5 and >65 years old, respectively. AEs were reported for 24% and 28% of patients 65 and >65 years old, respectively, serious AEs were reported for 4% and 9% of patients, respectively, and AE-related withdrawals were reported for 1.3% and 2% of patients, respectively. Conclusions: Self-titrated biphasic insulin aspart 70/30 was found to be well-tolerated and effective in type 2 diabetes patients >65 years old, as well as in patients 65 years old. HbA 1c and fasting plasma glucose decreases were significantly (P < 0.05) higher for patients >65 years old versus patients 65 years old. Tolerability was indicated by major and minor hypoglycemia rates at or below <0.5 episodes ppy in both age groups. Overall rates of AE and serious AEs were higher among patients > 65 years; withdrawals related to AEs were 2% compared with 1.3% in the younger age group. ClinicalTrials.gov identifier: NCT 00101751. © 2011 Elsevier HS Journals, Inc.

Peleg M.,Haifa University | Fox J.,University of Oxford | Fox J.,University College London | Fox J.,DEONTICS | And 14 more authors.
Endocrine Practice | Year: 2014

Objective: Clinical practice guidelines (CPGs) could have a more consistent and meaningful impact on clinician behavior if they were delivered as electronic algorithms that provide patient-specific advice during patient-physician encounters. We developed a computer-interpretable algorithm for U.S. and European users for the purpose of diagnosis and management of thyroid nodules that is based on the "AACE, AME, ETA Medical Guidelines for Clinical Practice for the Diagnosis and Management of Thyroid Nodules," a narrative, evidence-based CPG.Methods: We initially employed the guideline-modeling language GuideLine Interchange Format, version 3, known as GLIF3, which emphasizes the organization of a care algorithm into a flowchart. The flowchart specified the sequence of tasks required to evaluate a patient with a thyroid nodule. PROforma, a second guideline-modeling language, was then employed to work with data that are not necessarily obtained in a rigid flowchart sequence. Tallis - a user-friendly web-based "enactment tool" - was then used as the "execution engine" (computer program). This tool records and displays tasks that are done and prompts users to perform the next indicated steps. The development process was iteratively performed by clinical experts and knowledge engineers.Results: We developed an interactive web-based electronic algorithm that is based on a narrative CPG. This algorithm can be used in a variety of regions, countries, and resource-specific settings.Conclusion: Electronic guidelines provide patient-specific decision support that could standardize care and potentially improve the quality of care. The "demonstrator" electronic thyroid nodule guideline that we describe in this report is available at http://demos.deontics.com/trace-review-app (username: reviewer; password: tnodule1). The demonstrator must be more extensively "trialed" before it is recommended for routine use. Copyright © 2014 AACE.

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