Dirican, Ahmet
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ahmet.dirican@ieu.edu.tr
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09.02. Internal Sciences
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Sustainable Development Goals
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66
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1225
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19
Documents
58
Citations
1066
Scholarly Output
6
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6
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0
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0
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11
Scopus Citation Count
14
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2
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2
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0
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0
WoS Citations per Publication
1.83
Scopus Citations per Publication
2.33
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4
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0
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6 results
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Now showing 1 - 6 of 6
Article Hypermetabolic Axillary Lymph Nodes Associated With Covid-19 Vaccination in Breast Cancer Management(Galenos Publishing House, 2023) Taşçı, Cengiz; Dirican, Ahmet; Sözbilen, Ethem Murat; Pehlivan, F.S.; Serter, SelimA 42-year-old female patient diagnosed with invasive ductal breast ca underwent18F-fluorodeoxyglucose (FDG) positron emission tomography/ computed tomography (PET/CT) scan for staging, 1.5 cm diameter hypermetabolic lesion was observed in the lower inner quadrant of the right breast that was compatible with primary tumor [maximum standardized uptake value (SUVmax ): 10.5]. No pathological18F-FDG uptake was observed in lymph nodes whose fatty hilum was seen in the right axilla. However, in the left axilla and left deep axilla, hypermetabolic lymph nodes with a maksimum diameter of 19 mm and fatty hilum were observed (SUVmax: 8.0). In a detailed CT evaluation, these lymph nodes have thicker walls than the ones in the right axilla. The patient was questioned again and coronavirus disease-2019 (COVID-19) vaccination history (with BNT162b2, COVID-19 mRNA vaccine) was determined that was administrated to the left arm 5 days ago. Tru-cut biopsy was performed from the left aksillary lymph nodes and proved to be reactive lymphoid tissue and there was no primary or metastatic tumor in these axillary lymph node tissues. The patient was given neoadjuvant chemotherapy 4.5 months after the first18F-FDG PET/CT, and the second was performed for the treatment response evaluation. Significant regression was determined from the findings. The patient underwent right total mastechtomy. She was being followed up with adjuvant chemotherapy and radiotherapy. In conclusion, hypermetabolic lymph nodes in the axillas should be interrogated for vaccination in patients with breast cancer. Hypermetabolic lymph nodes observed on the same side of the vaccinated arm in the 18 F-FDG PET/CT scan may be related to vaccine-induced reactive lymph node enlargement. Lymph node metastasis may be excluded, especially if there are hypermetabolic lymph nodes with preserved fatty hilum in the contralateral axilla on the same side as the vaccinated arm. Active lymph nodes reactive to the vaccine become inactive after a while. © 2023 by the Turkish Society of Nuclear Medicine.Article Terbium-161 PSMA Therapy in mCRPC Patient Based on an Optimized Radiolabeling Protocol(Springer, 2025) Sezgin, Ceren; Uygur, Emre; Parlak, Yasemin; Karatay, Busra; Barutca, Sabri; Dirican, Ahmet; Gumuser, GulThis study presents a novel radiolabeling technique for [161Tb]-PSMA-617 in metastatic castration-resistant prostate cancer (mCRPC). The research focused on assessing the radiochemical yield, in vivo stability, and pharmacokinetics of [116 Tb]-PSMA-617 in a clinical setting. Using a sodium acetate buffer and ascorbic acid, a high radiochemical yield (97.98% +/- 2.01) was achieved, ensuring stability and purity. The therapy was evaluated to a 77-year-old mCRPC patient resistant to [177Lu]-PSMA-617, showing favorable biodistribution and urinary excretion. Despite initial stability, disease progression occurred, with a TP53 mutation identified via liquid biopsy. While the method holds promise for targeted radionuclide therapy, resistance mechanisms remain a challenge, necessitating further research for optimized patient selection and treatment strategies.Article The Confusion Caused by the Fear of Covid 19 in the Future of Cancer Patients(Ibn Sina Trust, 2023) Ekinci, Ferhat; Ates, Gonca Akdere; Erdogan, Atike Pinar; Celik, Cumali; Dirican, Ahmet; Goksel, GamzeObjective: The centrality of events scale (CES) was formed to determine to what extent this localisation cancer disease was by fear of COVID-19 in cancer patients or how centralised the cognitive trauma was in this patient group.Materials and Methods: In the first paragraph of the short 7-item CES, it was written, Please think about the most stressful or traumatic event in your life, then 3 options were given. These and C) Other. After marking one of these options, the subjects were instructed to mark their level of agreement with the 7 items as stated by Berntsen and Rubin, and thus this section was the same as the original questionnaire. To be able to evaluate the questionnaire results taking the disease characteristics into account, a record was made of age, gender, treatment history (chemotherapy and radiotherapy), spread, local, metastatic).The questionnaires were administered to all the cancer patients who presented at the oncology clinic between 1 April and 1 October 2020.Results:This study was conducted to seek an answer to this question, and it was seen that of a total of 523 patients diagnosed with cancer, the vast majority (n:368, 70.4%) saw the most traumatic and stressful event of their life as cancer, with the response to option A on the questionnaire. The possibility of contracting COVID-19 was selected by 83 (15.9%) patients as the most stressful or traumatic event in their life. The option of C was marked by 72 (13.8%) patients. This showed that neither cancer nor fear of coronavirus infection was strong enough to replace the traumatic event experienced and centred in the identity of these 72 patients. These traumas of the patients were analyzed with the mean CES points. The highest points were obtained by those who marked option A, at 3.71, which was statistically significantly higher than the 3.29 points for B and 3.29 points for C (p:0.004).Conclusion:A trauma left in the past actually lives on in the cognitive memory and may even be established at the centre of the self and personal identity. Thus, by modifying the short 7-item CES, developed by Berntsen and Rubin to be an objective, measurable format, the results of this study demonstratated both the extent to which the possibility of contracting COVID-19 has started to be established in cancer patients and the unshakable but declining centrality of cancer in the traumatic past.Article Citation - Scopus: 1Vinorelbine Induced Serpentine Supravenous Hyperpigmentation(Türkiye Klinikleri, 2022) Yetut, Ahsen Duygu; Dirican, Ahmet; Çelik, Cumali; Erdogan, Atıke Pınar; Taş, Semra; Ekinci, FerhatSerpentine supravenous hyperpigmentation (SSH) is a rare complexity arising from antineoplastic therapy. Vinorelbine, a\rchemotherapeutic drug that is frequently used for the treatment of breast and lung cancer, contributes to the etiology of SSH. A 54 years old\rmale patient was being treated for lung adenocarcinoma. An intravenous (IV) infusion of vinorelbine was administered in the distal dorsal vein\rof the left forearm. Erythematous hyperpigmentation at the infusion area was observed a week after the administration of the chemotherapeutic\rdrug. The initial symptoms of SSH usually appear between 1 to 15 days post IV administration of a cytotoxic drug, and it spontaneously becomes\rhyperpigmented within 1-3 weeks. However, these local reactions can be prevented by applying IV infusion for a short period (15-30\rmin) along with adequate venous irrigation (75-124 mL) instead of bolus administration. The termination of the drug can also be considered.Article Citation - WoS: 4Citation - Scopus: 5A Multicentre, Multinational Study of Clinical Characteristics and Prognosis of Hepatocellular Carcinoma(Who Eastern Mediterranean Regional Office, 2023) Dirican, Ahmet; Uncu, Doğan; Sekacheva, Marina; Artaç, Mehmet; Aladashvil, Archil; Erdoğan, Atike; Kaplan, MuhammetBackground: Hepatocellular carcinoma (HCC) is a significant health problem, and the associated mortality rate is increasing.Aim: We aimed to determine the clinical characteristics and prognosis for HCC in member countries of the OncoBridge Study Group. Methods: We recruited 630 patients diagnosed with HCC between 2013 and 2019 from 4 countries (Turkiye, Russia, Georgia, and Greece). Univariate and multivariate analyses were conducted to investigate clinical and laboratory prognostic factors. Receiver operating characteristic (ROC) analysis was used to determine the prognostic value of the neutrophil to lymphocyte ratio (NLR) and alpha-fetoprotein (AFP) value.Results: The 3 most common etiological factors were hepatitis B infection (39.7%), hepatitis C virus infection (17.0%) and non-alcoholic fatty liver disease (9.0%). Median overall survival for the whole group was 25 [95% confidence interval (CI): 15.7-34.2] months. Cut-off values for AFP and NLR were accepted as 200 ng/mL and 3.45, respectively. The area under the ROC curve values for AFP, NLR and NLR+AFP were 0.625 (95% CI: 0.547-0.704), 0.589 (95% CI: 0.512-0.667) and 0.657 (95% CI: 0.583-0.731). From the multivariate analysis, advanced tumour size, lymph node involvement and metastasis (TNM) stage, presence of cirrhosis, high AFP, and high NLR values were associated with poor survival.Conclusion: AFP, NLR, advanced TNM, and presence of cirrhosis may predict prognosis in patients with HCC. Studies involving more countries are needed to corroborate these findings.Article Citation - WoS: 7Citation - Scopus: 8Could the Inflammatory Prognostic Index Predict the Efficacy of Regorafenib in Patients With Metastatic Colorectal Cancer?(Springer, 2022) Erdogan, Atike Pinar; Ekinci, Ferhat; Karabas, Aykut; Balcik, Onur Yazdan; Barutca, Sabri; Dirican, AhmetPurpose To investigate the clinical importance of the inflammatory prognostic index (IPI) in patients with metastatic colorectal cancer treated with regorafenib. Methods A retrospective analysis of 65 metastatic CRC patients treated with regorafenib between 2015 and 2020 was performed. The association between NLR, PNLR, IPI, and overall survival (OS) and progression-free survival (PFS) was evaluated. Results According to the cut-off points, patients were divided into two groups. The patients in the high IPI group showed poorer OS compared to patients in the low IPI groups. The PFS was better in patients with low neutrophil-lymphocyte ratio (NLR) and platelet-neutrophil to lymphocyte ratio (PNLR), and the OS was better in patients with low IPI. Conclusion Among the immune inflammation scores analyzed in mCRC patients receiving regorafenib, NLR and PNLR were the best predictor of recurrence, whereas IPI was the best predictor of long-term survival. After being confirmed by better designed controlled trials, IPI can be used to identify the group of patients who will benefit more from regorafenib treatment.
