Thomas Rallis

Dr. Thomas Rallis

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Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2019 in Respiratory Medicine Case Reports
Verified
Journal Article
Open access
ALA. Lazopoulos
A. Lazopoulos
DKD. Krimiotis
D. Krimiotis
NSNikolaos Christos Schizas
Nikolaos Christos Schizas
TRThomas Rallis
Thomas Rallis
AGA.S. Gogakos
A.S. Gogakos
NBN. Barbetakis
N. Barbetakis
Gynecomastia with mastodynia and galactorrhea as a paraneoplastic syndrome due to lung cancer with complete response after surgical excision is rare. A 62-year-old Caucasian male presented with mastodynia, galactorrhea and right breast enlargement. Chest x-ray revealed a left upper lobe tumor. The patient had high levels of serum beta-human chorionic gonadotropin (b-HCG) and prolactine. Complete staging was negative for metastases. A typical left upper lobectomy with radical mediastinal lymph node dissection was performed. Pathology report was consistent with a poorly differentiated adenocarcinoma (T2N1M0). Immunohistochemically, multinucleate cells and occasional mononucleate tumor cells showed positivity for human chorionic gonadotropin. The patient received adjuvant chemotherapy with cisplatin - navelbine. One year later physical examination showed regression of both gynecomastia and mastodynia and there was no nipple discharge, while he is free from local or distant metastatic disease and the b-HCG level is normal (1,59 mIU/ml). This case represents a very rare, first manifestation of lung cancer. Galactorrhea, mastodynia and gynecomastia were the initial symptoms, which totally resolved following the successful surgical resection and adjuvant chemotherapy. In this case, prolactin and b-HCG are useful biomarkers during follow up for checking local or distal recurrence of the disease.

1 July 2015 in The Annals of Thoracic Surgery
Verified
Journal Article
Closed access
ALAchilleas Lazopoulos
Achilleas Lazopoulos
CAChristos Asteriou
Christos Asteriou
TRThomas Rallis
Thomas Rallis
NBNikolaos Barbetakis
Nikolaos Barbetakis

28 July 2025 in Current Oncology
Verified
Journal Article
Open access
PDF file
VTVasileios Theocharidis
Vasileios Theocharidis
TRThomas Rallis
Thomas Rallis
AGApostolos Stefanos Gogakos
Apostolos Stefanos Gogakos
DPDimitrios Paliouras
Dimitrios Paliouras
ALAchilleas Lazopoulos
Achilleas Lazopoulos
NBNikolaos Barbetakis
Nikolaos Barbetakis
Malignant mediastinal tumors are a group representing some of the most demanding oncological challenges for early, multi-level, and successful management. The timely identification of any suspicious clinical symptomatology is urgent in achieving an accurate, staged histological diagnosis, in order to follow up with an equally detailed medical therapeutic plan (interventional or not) and determine the principal goals regarding efficient overall treatment in these patients. We report a case of a 24-year-old male patient with an incident-free prior medical history. An initial chest X-ray was performed after the patient reported short-term, consistent moderate chest pain symptomatology, early work fatigue, and shortness of breath. The following imaging procedures (chest CT, PET-CT) indicated the presence of an anterior mediastinal mass (meas. ~11 cm × 10 cm × 13 cm, SUV: 8.7), applying additional pressure upon both right heart chambers. The Alpha-Fetoprotein (aFP) blood levels had exceeded at least 50 times their normal range. Two consecutive diagnostic attempts with non-specific histological results, a negative-for-malignancy fine-needle aspiration biopsy (FNA-biopsy), and an additional tumor biopsy, performed via mini anterior (R) thoracotomy with “suspicious” cellular gatherings, were performed elsewhere. After admission to our department, an (R) Video-Assisted Thoracic Surgery (VATS) was performed, along with multiple tumor biopsies and moderate pleural effusion drainage. The tumor’s measurements had increased to DMax: 16 cm × 9 cm × 13 cm, with a severe degree of atelectasis of the Right Lower Lobe parenchyma (RLL) and a pressure-displacement effect upon the Superior Vena Cava (SVC) and the (R) heart sinus, based on data from the preoperative chest MRA. The histological report indicated elements of a combined, non-seminomatous germ-cell mediastinal tumor, posthuberal-type teratoma, and embryonal carcinoma. The imminent chemotherapeutic plan included a “BEP” (Bleomycin®/Cisplatin®/Etoposide®) scheme, which needed to be modified to a “VIP” (Cisplatin®/Etoposide®/Ifosfamide®) scheme, due to an acute pulmonary embolism incident. While the aFP blood levels declined, even reaching normal measurements, the tumor’s size continued to increase significantly (DMax: 28 cm × 25 cm × 13 cm), with severe localized pressure effects, rapid weight loss, and a progressively worsening clinical status. Thus, an emergency surgical intervention took place via median sternotomy, extended with a complementary “T-Shaped” mini anterior (R) thoracotomy. A large, approx. 4 Kg mediastinal tumor was extracted, with additional RML and RUL “en-bloc” segmentectomy and partial mediastinal pleura decortication. The following histological results, apart from verifying the already-known posthuberal-type teratoma, indicated additional scattered small lesions of combined high-grade rabdomyosarcoma, chondrosarcoma, and osteosarcoma, as well as numerous high-grade glioblastoma cellular gatherings. No visible findings of the previously discovered non-seminomatous germ-cell and embryonal carcinoma elements were found. The patient’s postoperative status progressively improved, allowing therapeutic management to continue with six “TIP” (Cisplatin®/Paclitaxel®/Ifosfamide®) sessions, currently under his regular “follow-up” from the oncological team. This report underlines the importance of early, accurate histological identification, combined with any necessary surgical intervention, diagnostic or therapeutic, as well as the appliance of any subsequent multimodality management plan. The diversity of mediastinal tumors, especially for young patients, leaves no place for complacency. Such rare examples may manifest, with equivalent, unpredictable evolution, obliging clinical physicians to stay constantly alert and not take anything for granted.

1 January 2017 in Journal of Biomedicine
Verified
Journal Article
Open access
MPMaria D. Pappa
Maria D. Pappa
NTNikolaos V. Theodosiadis
Nikolaos V. Theodosiadis
DPDimitrios Paliouras
Dimitrios Paliouras
TRThomas Rallis
Thomas Rallis
AGApostolos S. Gogakos
Apostolos S. Gogakos
Pavlos SarafisPavlos Sarafis
Pavlos Sarafis
Cardiac operations which require Cardiopulmonary bypass (CPB) are considered the most common procedures in cardiac surgery, performed for more than half a century, especially in Europe and North America. Despite that new technologies are being incorporated in CPB as long as the development of new techniques in CPB, some debates still remain. These debates regard the achievement of the needed optimal perfusion during CPB and the relation between perfusion pressures and the optimal blood flow during extracorporeal circulation. Blood flow and blood pressure during Cardiopulmonary bypass are very important factors. Although more studies are in favor of a minor superiority of the optimal blood flow requirements, compared to the corresponding optimal blood pressure needs, their role is quite interdependent. The usage of contemporary electronic Data Management Systems (DMS) led to a significant evolution of the perfusion science. Adequate perfusion can now be judged by its results in real time, while information from DMS, such as venous saturation, levels of haemoglobin and lactate, may be used as the markers of optimal perfusion and additionally for the development of the perfusion protocols in the future.

1 January 2017 in Journal of Biomedicine
Verified
Journal Article
Open access
AGApostolos S. Gogakos
Apostolos S. Gogakos
FCFotios Chatzinikolaou
Fotios Chatzinikolaou
TKTriantafyllia Koletsa
Triantafyllia Koletsa
LPLeonidas Pavlidis
Leonidas Pavlidis
DPDimitrios Paliouras
Dimitrios Paliouras
NBNikolaos Barbetakis
Nikolaos Barbetakis
Background: Atherosclerosis is the most important cardiovascular disease across the globe with a large proportion of associated morbidity and mortality. The aim of this study is to detect the presence of atherosclerosis-like lesions in the three segments of the thoracic aorta (ascending aorta, aortic arch and descending aorta) of 50 unselected adult cadavers of all ages. Methods: An autopsy analysis was performed using 50 unselected adult cadavers (37 male, 13 female - mean age 64.2 years; age range 19-90 years). Macroscopic dissection of the three segments of the thoracic aorta was performed and the presence of atherosclerosis-like lesions was evaluated according to the subjects' demographic and clinical characteristics. Results: Atherosclerotic lesions in at least one of the three aortic segments were identified in 82% of cadavers, 83.78% of male and 76.92% of female. Of 50 subjects, 30% had an atherosclerotic lesion in the ascending aorta, 48% in the aortic arch and 44% in the descending aorta. No aneurysmal changes were detected. Smoking, hypertension, diabetes, hypercholesterolemia, obesity and coronary disease were the risk factors correlated most with the presence of atherosclerosis. Conclusions: Atherosclerosis-like lesions in the thoracic aorta are prevalent in adults of all ages. Obesity is a major risk factor regarding the development of atheromas. This cadaveric study comes to underline the necessity of further similar studies in order to evaluate the presence of atherosclerosis in the thoracic aorta, and also helps to assess the risk of major cardiovascular events in the general population.