Contribution of neck ultrasonography to patient management in patients with differentiated thyroid carcinoma with excellent response to therapy.

Purpose: To assess the contribution of intense neck ultrasonography (US) follow-up in the clinical management of differentiated thyroid carcinoma (DTC) patients with the American Thyroid Association (ATA) low-intermediate-risk of recurrence and an excellent response after total thyroidectomy and radioiodine therapy.

Materials And Methods: Medical records of patients who underwent serial follow-up neck US examinations between 1996 and 2022 were analyzed retrospectively. The utility of serial US examinations in detecting structural recurrence was assessed in all patients and different subgroups-categorized per the initial risk of recurrence and stimulated thyroglobulin (sTg) level at 1-year response assessment.

Long-term Intense F-FDG Uptake by the Homeostatic Matrix-associated Inflammatory Response May Mimic Malignancy Recurrence.

A 70-year-old man underwent right upper lobectomy for lung adenocarcinoma. During the operation, hemostatic matrix (as known Floseal) was used to prevent pulmonary laceration-associated bleeding. When F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography was performed for staging after surgery, intense F-FDG uptake was observed in the cicatricial fibrotic tissue in the operation area, and no significant change was observed in that area during the 4-year follow-up.

Magnetic Resonance Imaging Signal Changes Mimicking Bone Metastasis in Patients Receiving Bisphosphonate Therapy.

Bisphosphonates are inorganic pyrophosphate agents that reduce bone turnover. These agents reduce bone pain and delay skeletal complications, such as fractures in patients with metastatic lytic lesions, malignant-related hypercalcemia, multiple myeloma, Paget's disease of bone, and osteoporosis. Osteonecrosis, developing in the jaw bones specifically, has been described as a complication associated with the use of bisphosphonates.

PET Parameters are Useful in Predicting Endometrial Cancer Risk Classes and Prognosis.

Aim:  We investigate the role of preoperative PET parameters to determine risk classes and prognosis of endometrial cancer (EC).

Methods:  We enrolled 81 patients with EC who underwent preoperative F-18 FDG PET/CT. PET parameters (SUV, SUV, MTV, TLG), grade, histology and size of the primary tumor, stage of the disease, the degree of myometrial invasion (MI), and the presence of lymphovascular invasion (LVI), cervical invasion (CI), distant metastasis (DM) and lymph node metastasis (LNM) were recorded.

Clinical behavior and outcome of papillary T1 thyroid cancers: South Korea vs. Turkey vs. Colombia in a cohort study analyzing oncological outcomes.

Background/purpose: There has not been an international multicentric study to examine the relationship between thyroid cancer clinical outcomes and geographic location for South Korea, Colombia, and Turkey, whereas thyroid cancer is amongst the highest three cancer types seen in South Korea and Turkey. The aim of the study was to assess regional differences of T1 papillary thyroid cancer outcomes in Korea, Turkey and Colombia.

Methods: This is an observational non-randomized study.

False-positive I-131 Uptakes at Pulmonary Wedge-resection Site and Soft Tissue Lateral to the Femoral Heads in a Patient with Papillary Thyroid Carcinoma.

A hyper-metabolic pulmonary nodule was detected on 18F-FDG PET/CT in a 65-year-old woman who had been followed up for 12 years without any complaints following treatment for papillary thyroid cancer (PTC). Wedge resection was performed to the pulmonary nodule and the pathologic examination revealed PTC metastasis. On the post-therapeutic I-131 scan after radioiodine treatment, focal I-131 uptake was detected at the site of pulmonary wedge resection.

Early predictive value of baseline renal transplant scintigraphy in pediatric patients.

Objectives: The value of baseline renal transplant scintigraphy (RTS) with technetium-99m diethylenetriaminepentaacetic acid (Tc-DTPA) performed within 2 days after transplantation in predicting early renal transplant outcome in pediatric recipients was assessed in this study.

Patients And Methods: Baseline RTS of 48 pediatric patients were studied retrospectively. Hilson's perfusion index, graft index (GI), time between peak perfusion and iliac artery (ΔP), and the ratios of peak perfusion to plateau (P : Pl), to peak iliac artery (P : A), and to peak uptake (P : U) were obtained.

Contribution of SPECT/CT to Evaluate Urinary Leakage Suspicion in Renal Transplant Patients.

It is known that renal scintigraphy is the best imaging modality in the diagnosis of urinary leakage. Usually, only planar images are diagnostic but sometimes they are unclear when urinoma is small and adjacent to kidney or bladder. In other respects, planar images can be false-positive in the case of increased blood flow of abdominal wall.

The Contribution of Fluorine F-FDG PET/CT to Lung Cancer Diagnosis, Staging and Treatment Planning.

Objective: Lung cancer is the most common cause of cancer-related death throughout the world, and the correct choice of treatment based on early diagnosis and staging increases the chance of survival. The present study aims to investigate the contribution of fluorine 18-fluorodeoxyglucose-positron emission tomography/computed tomography (F-FDG PET/CT) to the management of lung cancer.

Methods: In this study, 50 patients who underwent F-FDG PET/CT for lung cancer diagnosis and staging between February 2012 and February 2014 were included.

Two Different Causes of Decreased Activity on Ipsilateral Iliac Artery in Renal Transplant Scintigraphy.

In 2 patients, perfusion images of renal transplant scintigraphy showed similarly decreased activity on ipsilateral iliac artery. One's graft was photopenic because of arterial thrombosis. However, the other's graft had sufficient perfusion and no abnormality in iliac arteries, but he had femoral arteriovenous graft for hemodialysis on the contralateral side.

Scintigraphic and Sonographic Findings of Subcapsular Cortical Necrosis in a Transplanted Kidney.

Renal transplant scintigraphy, performed in a 23-year-old man who had renal graft from a living donor, showed nearly normal perfusion and moderately low function of the graft. But the margins of the graft were blurred, and it was interestingly appearing enlarged late in the study. Ultrasound demonstrated a hypoechoic rim surrounding the whole kidney.

Recurrence Incidence in Differentiated Thyroid Cancers and the Importance of Diagnostic Iodine-131 Scintigraphy in Clinical Follow-up.

Objective: Differentiated thyroid cancers (DTC) are tumors with good prognosis. However, local recurrence or distant metastasis can be observed. In our study, we aimed to investigate the incidence of recurrence and the importance of diagnostic iodine-131 whole body scan (WBS) in clinical follow-up in patients with DTC.

Risk factors for persistent disease in papillary thyroid carcinoma with lymph node metastasis.

Purpose: It is known that the presence of neck lymph node (LN) metastasis is correlated with persistent disease in papillary thyroid carcinoma (PTC) patients. After appropriate therapy, most patients become disease free, whereas some may still have persistent disease. The present study aimed to determine the potential variables affecting the clinical course of the disease and persistent disease patterns in PTC patients with LN metastasis.

A New Quantitative Index for Baseline Renal Transplant Scintigraphy With 99mTc-DTPA in Evaluation of Delayed Graft Function and Prediction of 1-Year Graft Function.

Purpose: The aims of this study were to assess quantitative indices of baseline renal transplant scintigraphy (RTS) with Tc-DTPA for evaluation of delayed graft function (DGF) and prediction of 1-year graft function and to describe a new inclusive index for RTS.

Patients And Methods: A total of 179 patients to whom RTS with Tc-DTPA was performed within 2 days after kidney transplantation were analyzed retrospectively. Hilson perfusion index, perfusion time (ΔP), peak-to-plateau ratio, peak perfusion-to-iliac artery ratio, T½ of graft washout, peak perfusion-to-uptake ratio, and ratio of uptake at 20 to 3 minutes (R20/3) were obtained.

A Clear Cell Variant of Papillary Thyroid Microcarcinoma With Lung, Bone, and Soft Tissue Metastases.

A 56-year-old woman presented with a mass lesion on the right occipital bone underwent total resection of the tumor. An adenocarcinoma with immunostaining positive for thyroid transcription factor-1 and thyroglobulin was found. An ultrasound/thyroid scan detected a hot nodule of 9 mm in the right lobe.

Evaluation of Renal Transplant Scintigraphy and Resistance Index Performed Within 2 Days After Transplantation in Predicting Long-Term Graft Function.

Purpose: Value of renal transplant scintigraphy and resistance index (RI) in the assessment of renal graft function is well known. The aim of this study was to evaluate the predictive value of renal transplant scintigraphy and RI for long-term graft function.

Materials And Methods: A total of 119 patients were analyzed retrospectively.

To what extent estimated or measured GFR could predict subclinical graft fibrosis: a comparative prospective study with protocol biopsies.

Monitoring of allograft function entails methods more accurate than serum creatinine and creatinine-based GFR equations (eGFR). This prospective trial aimed at investigating the diagnostic accuracy of creatinine- and cystatin C-based eGFR with measured GFR (mGFR) and compared them with graft fibrosis detected by protocol biopsies (PBx). Forty-four kidney transplant recipients were enrolled.

Comparison of renal transplant scintigraphy with renal resistance index for prediction of early graft dysfunction and evaluation of acute tubular necrosis and acute rejection.

Purpose: We discuss whether resistance index (RI) and renal scintigraphy obtained within 48 hours after operation could predict the early graft dysfunction. We also aimed to assess the uses of scintigraphy and RI in diagnosis of acute rejection (AR) and acute tubular necrosis (ATN).

Methods: A total of 153 studies were performed in 109 patients.

Comparison of exercise-rest-reinjection Tl-201 imaging and rest sublingual isosorbide dinitrate Tc-99m MIBI imaging for the assessment of myocardial viability.

Purpose: Nitrate administration has been proposed to enhance the detection of myocardial viability when performing myocardial perfusion imaging. In this study, we aimed to compare Tl-201 exercise-rest-reinjection protocol with rest isosorbide dinitrate (ISDN)-Tc99m MIBI study in the same population examined for the myocardial viability.

Methods: Twenty-six patients with coronary artery disease who had fixed segmental defects on exercise-rest-Tl-201 imaging were studied.

Hypothyroid Hashimoto's thyroiditis with scintigraphic and color flow doppler sonography features mimicking a hot nodule.

We report a 59-year-old woman who had Hashimoto's thyroiditis (HT) with hypothyroidism. A solid hypervascularized nodule in the right lobe was detected by color flow doppler sonography (CFDS). Thyroid (99m)Tc pertechnetate scintigraphy revealed a hot area in the right lobe.

Clinical implications of diffuse hepatic uptake observed in postablative and post-therapeutic I-131 scans.

Diffuse hepatic uptake of I-131 either on diagnostic or post-therapeutic scans is a usual finding in patients with differentiated thyroid carcinoma. The aim of this study was to evaluate the frequency and clinical significance of diffuse hepatic uptake of radioiodine on post-therapeutic (PT) and postablative (PA) whole-body scans.A total of 720 PA and 172 PT I-131 scans in a total of 732 patients with differentiated thyroid carcinoma were retrospectively reviewed.

Multiple primary tumors in differentiated thyroid carcinoma and relationship to thyroid cancer outcome.

Aim: Patients with differentiated thyroid carcinoma (DTC) have long-life expectancy and are at risk for developing a second primary cancer. Aim of this study was to assess the occurrence of DTC in conjunction with other primary neoplasms. It was also aimed to explore the possibility of synchronous or metachronous other malignancies having an impact on clinical course of thyroid carcinoma.

Thyrotoxic autoimmune encephalopathy in a female patient: only partial response to typical immunosuppressant treatment and remission after thyroidectomy.

Hashimoto's encephalopathy (HE) is a rare immune-mediated encephalopathy developing in patients with high serum concentrations of anti-thyroid antibodies usually in an euthyroid or hypothyroid state. We report a 31-year-old female patient with thyrotoxic HE whose daughter has been followed up with the same diagnosis. Suboptimal response was observed with intravenous methylprednisolone (IVMP), intravenous immunoglobulin (IVIG) and plasmapheresis.

Tc-99m MIBI SPECT in prediction of prognosis in patients with small cell lung cancer.

Purpose: The purpose of this study was to evaluate whether the degree of technetium-99m methoxyisobutylisonitrile (MIBI) uptake and its retention in delayed imaging in small cell lung cancer (SCLC) was correlated with the response to multiagent chemotherapy and to investigate if there was a relationship between the survival time of patients with SCLC and Tc-99m MIBI SPECT tumor uptake parameters at the time of diagnosis.

Methods: Between 1998 and by December 2004, 40 patients with SCLC were studied with Tc-99m MIBI SPECT at the time of diagnosis. The patients were classified by a follow-up CT as good responders (complete or partial remission) and poor responders (stable disease or progressive disease).