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    Evaluation of subclinical cardiovascular disease by carotid intima media thickness, epicardial adipose tissue thickness, serum endocan, and nesfatin-1 levels in patients with primary hyperparathyroidism
    (Tubitak Scientific & Technological Research Council Turkey, 2022) Kocabas, Muhammet; Alsancak, Yakup; Can, Mustafa; Cordan, Ilker; Burgucu, Hatice Caliskan; Karakose, Melia; Yerlikaya, Fatma Humeyra
    Background/aim: Data on the presence and extent of cardiovascular disease (CVD) risk in primary hyperparathyroidism (PHPT) are conflicting. In our study, we aimed to investigate the increased CVD risk in patients with PHPT by carotid intima-media thickness (CIMT), epicardial adipose tissue (EAT) thickness, and serum levels of endocan and nesfatin-1. Materials and methods: Patients with PHPT (n = 44) and age- and sex-matched healthy control subjects (n = 40) were enrolled in this study. Demographic data of the participants were questioned. Serum endocan and nesfatin-1 concentrations were assessed using commercially available ELISA kits. Noninvasive measurements of CIMT and EAT thickness were made with high-resolution ultrasonography and B-mode echocardiography. Results: There was no statistically significant difference in serum endocan and nesfatin-1 levels and EAT thickness in the PHPT group compared to controls. CIMT was statistically significantly higher in the PHPT group compared to controls (p = 0.001). A negative correlation was found between PTH and low-density lipoprotein cholesterol level (p = 0.001) but no significant relationship was found between other parameters. Conclusion: We found that CIMT is increased in patients with PHPT and consequently, CVD risk is high in these patients. More comprehensive studies are needed to identify other markers that predict increased CVD risk in patients with PHPT.
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    HDR Syndrome Accompanying Type 1 Diabetes Mellitus and Hypopituitarism
    (Hindawi Ltd, 2019) Can, Mustafa; Karakurt, Feridun; Kocabas, Muhammed; Cordan, Ilker; Karakose, Melia; Kulaksizoglu, Mustafa
    HDR (Hypoparathyroidism, Deafness, and Renal Dysplasia) syndrome is an autosomal dominant disorder characterized by the triad of hypoparathyroidism, sensorineural deafness, and renal disease. Approximately 65% of patients with HDR syndrome have all three of these features, while others have different combinations of these features. We aimed to present a case with primary hypoparathyroidism, hearing loss, and nondiabetic chronic kidney disease and diagnosed as HDR syndrome while being followed up for type 1 diabetes mellitus and hypopituitarism.
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    Incidence of second primary malignancies in patients with thyroid cancer in the Turkish population
    (Tubitak Scientific & Technological Research Council Turkey, 2019) Karakose, Melia; Cordan, Ilker; Can, Mustafa; Kocabas, Muhammet; Kulaksizoglu, Mustafa; Karakurt, Feridun
    Background/aim: Thyroid cancer is the most common endocrine malignancy. Recently the incidence has been increasing faster compared to other malignancies. Different studies have shown that the incidence of breast cancer in patients followed due to thyroid cancer has increased, and vice versa. The aim of this study was to evaluate the frequency of second primary cancers in the follow-up of patients with thyroid cancer. Materials and methods: In this study, 1196 patients with thyroid cancer were evaluated in the Necmettin Erbakan University Meram Medical School's Department of Endocrinology between 2004 and 2018. Demographic characteristics and radiological and pathological results of the patients were recorded. The presence of accompanying second malignancies in patients with thyroid cancer was investigated. Results: In our study, 985 (82.4%) women (mean age: 46.1 +/- 13.3 years) and 211 (17.6%) men (mean age: 49.9 +/- 14.2 years) were evaluated. The median follow-up was 63 months (2-164 months). Of the 1196 patients, 1126 (94.1%) had no additional cancer and 70 (5.9%) patients had a second malignancy. The accompanying second malignancies were breast cancer in 24 (2%) patients, skin cancer in 8 (0.7%) patients, renal cell cancer in 5 (0.4%) patients, lung cancer in 5 (0.4%) patients, colon cancer in 5 (0.4%) patients, lymphoma in 5 (0.4%) patients, endometrial cancer in 4 (0.3%) patients, and 14 cases of other rare types of cancer. Conclusion: In our study, it was found that the most common second primary malignancy in patients with thyroid cancer was breast cancer. However, other cancers (skin cancer, renal cell cancer, lymphoma, and colon, lung, or endometrial cancer) may occur in patients with thyroid cancer.
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    Increased incidence of malignancy in patients with primary hyperparathyroidism
    (Tubitak Scientific & Technological Research Council Turkey, 2021) Karakose, Melia; Kocabas, Muhammet; Can, Mustafa; Caliskan Burgucu, Hatice; Cordan, Ilker; Kulaksizoglu, Mustafa; Karakurt, Feridun
    Background/aim: Primary hyperparathyroidism (PHPT) is a disease that is diagnosed more frequently and generally in the asymptomatic period, with widely available biochemical tests. Evidence suggesting an association between PHPT and malignancy risk is increasing. Clarification of this association will be useful in PHPT for malignancy screening and management of patients with PHPT. In this study, we aimed to investigate the frequency of cancer in PHPT patients. Materials and methods: A total of 775 PHPT patients were included in the retrospective study. Demographic, clinical and laboratory data of the patients were evaluated retrospectively. Results: Malignancy was detected in 128 (16.50%) of 775 PHPT patients (female/male: 625/150). The mean age at diagnosis of PHPT was 57.99 +/- 10.86 years, and the mean age at diagnosis of malignancy was 57.46 +/- 11.17 years. Of the 128 patients with malignancy, 53 (41.40%) were diagnosed in the same year as PHPT. In terms of malignancy types, 51 (6.50%) of 775 PHPT patients had thyroid cancer. Thyroid cancer was followed by breast cancer (2.30%) and stomach cancer (1%) in order of frequency. Conclusion: We think that PHPT patients should be examined more carefully in terms of cancer risk, especially thyroid cancer. More comprehensive studies are needed to clarify the relationship between PHPT and cancer.
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    Prevalence of comorbidities and associated factors in acromegaly patients in the Turkish population
    (Tubitak Scientific & Technological Research Council Turkey, 2021) Can, Mustafa; Kocabas, Muhammet; Cordan, Ilker; Caliskan Burgucu, Hatice; Karakose, Melia; Kulaksizoglu, Mustafa; Karakurt, Feridun
    Background/aim: The presence of comorbidities in patients with acromegaly causes an increase in morbidity and/or mortality and a decrease in quality of life. In this study, we aimed to investigate the demographic, clinical and laboratory features, prevalence of acromegaly-related comorbidities, and factors associated with these comorbidities in patients with acromegaly. Materials and methods: In the study, 96 patients who were followed up with the diagnosis of acromegaly were included. Clinical, laboratory and imaging features, and accompanying comorbidities of the patients were recorded from the patient files. Results: Of the patients included in the study, 63 (65.6%) were female and 33 (34.4%) were male. The mean age of diagnosis was 42.61 +/- 12.08, and the mean follow-up period was 9.97 +/- 7.26 years. Median insulin-like growth factor 1 level was 238.16 ng/mL (30.5-820), median growth hormone level was 2.05 ug/L (0.1-29.4). A total of 60 (62.5%) of the patients were in the well-controlled group, and 36 (37.5%) had active disease at the time of inclusion. Diabetes mellitus (DM) was detected in 30 (31.3%) patients, prediabetes in 19 (28.8%) patients, hypertriglyceridemia in 38 (42.2%) patients, hypertension (HT) in 41 (42.7%) patients, cardiovascular disease in 5 (5.2%) patients, malignancy in 9 (9.4%) patients, obstructive sleep apnea syndrome in 8 (8.3%) patients, carpal tunnel syndrome in 11 (11.5%) patients, arthropathy in 5 (5.2%) patients, hearing loss in 7 (7.3%) patients, thyroid nodule in 56 (67.5%) patients, thyroid cancer in 4 (4.2%) patients, colonic polyp in 19 (38.8%) patients. Conclusion: In this study, we revealed that the most common comorbidities in acromegaly patients in the Turkish population are thyroid nodules, low high-density lipoprotein (HDL cholesterol (HDL-C) level, hypertriglyceridemia, HT, colonic polyps, DM, and prediabetes, and female sex and age at diagnosis are the most important factors associated with comorbidities.
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    The Relationship between Pre-operative Anti-thyroglobulin Antibody Level and Lymph Node Metastasis and Recurrence in Differentiated Thyroid Cancer
    (Kare Publ, 2023) Kaynak, Hulya; Kocabas, Muhammet; Can, Mustafa; Cordan, Ilker; Karakose, Melia; Karakurt, Feridun; Kulaksizoglu, Mustafa
    OBJECTIVE We aimed to investigate the relationship between positivity and level of pre-operative anti-thyroglobulin antibody (TgAb) and stage, recurrence, and metastasis in differentiated thyroid cancer (DTC). METHODS Three hundred and thirty-one patients who underwent total thyroidectomy and whose TgAb was measured in the pre-operative and post-operative period were included in the study. The laboratory and clinicopathological data of the patients were recorded from patient files. RESULTS Of the 331 patients enrolled, 253 (76.4%) were female and 78 (23.6) were male, and the mean age was 46.7 +/- 15.4. The final histopathology results were DTC in 126 (38.1%) patients and benign in 205 (61.9%) patients. TgAb was positive in 26 (20.6%) of 126 patients in the DTC group, while it was positive in 29 (14.1%) of 205 patients in the benign group. In patients with DTC, having lymph node metastasis, recurrence, and receiving radioactive iodine (RAI) ablation were found to be associated with higher pre-operative TgAb levels (p=0.023, p=0.032 and p=0.022, respectively). The TSH level at the time of diagnosis was significantly higher in the DTC group compared to the benign group (p<0.001). CONCLUSION In our study, pre-operative TgAb levels were found to be significantly higher in DTC patients with lymph node metastasis or recurrence. We found that pre-operative TgAb level significantly correlated with recurrence and lymph node metastasis.