Publications by authors named "Tzortzis V"

Background/objectives: Testicular germ cell tumors (TGCT) are common in young adult men and have high cure rates. Conventional serum tumor markers and imaging are not able to differentiate between histologic subtypes of the disease, which portend different prognoses and require distinct therapeutic strategies. Micro-RNAs (miRNAs) are small non-coding transcripts involved in the post-transcriptional regulation of gene expression, which have emerged as promising biomarkers in a variety of tumors.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the role of HSP90 as a potential diagnostic marker and therapeutic target in different types of testicular cancer, particularly focusing on embryonal carcinoma.
  • Researchers analyzed HSP90 expression in 84 nonmetastatic testicular cancer patients who underwent surgery, revealing varying positivity rates across tumor types.
  • The findings indicate a significant correlation between HSP90 expression in tumors and surrounding normal tissue, emphasizing its potential relevance in understanding and treating testicular cancer.
View Article and Find Full Text PDF

Introduction: Urine cytology using the Paris system (TPS) classification is useful for the detection and monitoring of bladder urothelial carcinoma (UC). However, the categories "atypical urothelial cells" (AUCs) and "suspicious for high-grade urothelial carcinoma" (SHGUC) do not establish a clear diagnosis. This pilot study aimed to investigate whether the presence of mutations in fibroblast growth factor receptor 3 (FGFR3) and telomerase reverse transcriptase (TERT) genes, in urine processed with liquid-based cytology (LBC) could enhance the diagnostic performance of cytology, particularly in defining the indeterminate categories of AUC and SHGUC.

View Article and Find Full Text PDF

Background: The risk of recurrence after nephrectomy for primary clear cell renal cell carcinoma (ccRCC) is estimated in daily practice solely based on clinical criteria. The aim of this study was to assess the prognostic relevance of common somatic mutations with respect to tumor aggressiveness and outcomes of ccRCC patients after definitive treatment.

Methods: Primary tumors from 37 patients with ccRCC who underwent radical nephrectomy were analyzed for presence of somatic mutations using a 15-gene targeted next-generation sequencing (NGS) panel.

View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted to compare the effectiveness of targeted antibiotic prophylaxis (TAP) versus empiric antibiotic prophylaxis (EAP) in preventing infections after prostate biopsy.
  • The study involved 141 patients, where the EAP group had a higher infection rate (9.85%) compared to the TAP group (1.4%), showing that TAP significantly reduces infection risks.
  • Findings indicated that rectal and urethral swab cultures can help identify antibiotic-resistant bacteria, leading to improved treatment outcomes.
View Article and Find Full Text PDF

Testicular germ cell tumors (TGCTs) are cancers with very good prognosis, even in the metastatic setting, with high curative potential mainly attributed to the introduction of cisplatin-based chemotherapy. However, approximately 15% of the patients develop platinum-refractory disease and suffer multiple relapses. Therefore, there is an unmet need for novel therapeutic agents with improved efficacy and minimal long-term side effects.

View Article and Find Full Text PDF

Background: Τhe adherence of p-fimbriated Escherichia coli (E. coli) to urothelial cells leading to recurrent urinary tract infections (rUTIs) may be prevented by proanthocyanidins (PACs) contained in American cranberries.

Purpose: The purpose of this clinical trial was to assess the clinical utility of prophylactic use of high-dose PACs daily in women with a history of rUTIs.

View Article and Find Full Text PDF

Bladder carcinoma is globally among the most prevalent cancers and is associated with a high mortality rate at advanced stages. Its detection relies on invasive diagnostic methods that are unpleasant for the patient. Non-invasive molecular biomarkers, such as miRNAs, could serve as alternatives for early detection and prognosis of this malignancy.

View Article and Find Full Text PDF

Background: This single-center, retrospective study was performed to investigate the safety and efficacy of radiofrequency-assisted (RF), laparoscopic partial nephrectomy (PN) with zero ischemia in patients with low-complexity small renal tumors.

Materials And Methods: Patients with small renal masses (SRMs) who underwent laparoscopic, clampless laparoscopic partial nephrectomy - radiofrequency assisted (LPN-RFA) between January 2016 and June 2020 were studied. Demographics, clinical and pathological characteristics, recurrence-free survival, and overall survival were recorded.

View Article and Find Full Text PDF

Upper tract urothelial carcinoma (UTUC) is a rare malignancy, occurring in 5-10% of patients diagnosed with UC, and involves the renal pelvis, calyces, or ureters. UTUC can be sporadic or hereditary as a clinical manifestation of Lynch syndrome. Therapeutic management of these patients is challenging.

View Article and Find Full Text PDF

Testicular germ cell tumors (TGCTs) are the leading cause of cancer-related death in males between the ages of 20 and 40. In the advanced stages, the combination of cisplatin-based chemotherapy and surgical excision of the remaining tumor can cure many of these patients. Vascular procedures may be required during retroperitoneal lymph node dissection (RPLND) in order to achieve the complete excision of all residual retroperitoneal masses.

View Article and Find Full Text PDF

Purpose: To investigate the diagnostic efficacy of fusion guided multiparametric MRI (mpMRI)-transrectal ultrasound (TRUS) biopsy versus systematic biopsy of the prostate in patients with suspicion of prostate cancer.

Methods: A total of 185 patients with PI-RADS 3 lesions or higher underwent fusion guided targeted and systematic prostate biopsy. Histology of samples was correlated with PI-RADS score and biopsy method for each patient.

View Article and Find Full Text PDF

Aim: Enhanced Recovery After Surgery (ERAS) protocols have been proven to optimize postoperative outcomes; however, misuse of opioid analgesics can still hinder postoperative recovery due to related side effects and potential complications.

Introduction: To determine if the implementation of ERAS protocol in post-chemotherapy retroperitoneal lymph node dissection (PC-RPLND) patients could help with reducing postoperative pain and opioid use.

Methods: A case-control study of consecutive testicular cancer patients with indications for PCRLPND, who were offered Conventional Post-operative Management (CPM) or ERAS protocol.

View Article and Find Full Text PDF

Testicular germ cell tumors (TGCT) are the leading cause of cancer-related death in young males between the ages of 20-40. Surgical resection and cisplatin-based chemotherapy can achieve a cure for the majority of patients with TGCTs, with survival rates of up to 97% for patients diagnosed at an early stage. The use of serum biomarkers, such as AFP β-HCG, and LDH, plays a significant role in both diagnosis and evaluation of response to treatment, and despite their low sensitivity and specificity levels, they are an integral part of the current tumor staging system and daily practice.

View Article and Find Full Text PDF

Granular cell tumors (GCTs) are a rare type of mesenchymal tumors that are histologically derived by Schwann cells and rise within soft tissues such as skin and mucosal surfaces. Differentiation between benign and malignant GCTs is often difficult and relies on their biological behavior and metastatic potential. While there are no standard guidelines for management, upfront surgical resection, whenever feasible, is key as a definitive measure.

View Article and Find Full Text PDF

Introduction: The use of immune checkpoint inhibitors (ICIs) as a front-line treatment for metastatic renal cell carcinoma (RCC) has significantly improved patient' outcome. However, little is known about the efficacy or lack thereof of immunotherapy after prior use of anti-PD1/PD-L1 or/and anti-CTLA monoclonal antibodies.

Methods: Electronic databases, including PubMed, EMBASE, Medline, Web of Science, and Cochrane Library, were comprehensively searched from inception to July 2022.

View Article and Find Full Text PDF

Hypoxia is recognized as a key feature of cancer growth and is involved in various cellular processes, including proliferation, angiogenesis, and immune surveillance. Besides hypoxia-inducible factor 1-alpha (HIF-1α), which is the main mediator of hypoxia effects and can also be activated under normoxic conditions, little is known about its counterpart, HIF-2. This study focused on investigating the clinical and molecular landscape of HIF-2-altered urothelial carcinoma (UC).

View Article and Find Full Text PDF

Standard systemic therapy of advanced renal cell carcinoma (RCC) involves targeting angiogenesis, mainly through tyrosine kinase inhibitors (TKI) against the vascular endothelial growth factor receptor (VEGFR) pathway and targeting the immune checkpoints, namely, programmed death-1 (PD-1) or its ligand (PD-L1), and cytotoxic T-lymphocyte-associated protein 4 (CTLA4). With current strategies of combining these two approaches in the front-line setting, less is known about optimal selection of therapy upon development of resistance in the second and later lines of treatment for progressive disease. This review discusses currently available therapeutic options in patients who have progressive RCC after prior treatment with double immune check-point inhibitors (ICIs) or ICI-TKI combinations.

View Article and Find Full Text PDF

Renal cell carcinoma (RCC) is the most frequent solid lesion accounting for ~90% of all kidney malignancies. Clear-cell RCC (ccRCC) represents the most frequent subtype. Urinary bladder is a rare metastatic site either synchronous or metachronous.

View Article and Find Full Text PDF

The mixed epithelial and stromal tumor family of kidney contain neoplasms with biphasic epithelial and stromal component. According to the 2016 World Health Organization Classification, they encompasses a spectrum of tumors ranging from predominantly cystic tumors (adult cystic nephroma) to tumors that are variably solid (Mixed epithelial and stromal tumor-MESTs). We present the case of a 20-year-old woman with an adult cystic nephroma which was verified by immunohistochemical examination.

View Article and Find Full Text PDF

Objective: Artificial neural networks (ANNs) are widely applied in medicine, since they substantially increase the sensitivity and specificity of the diagnosis, classification, and the prognosis of a medical condition. In this study, we constructed an ANN to evaluate several parameters of extracorporeal shockwave lithotripsy (ESWL), such as the outcome and safety of the procedure.

Methods: Patients with urinary lithiasis suitable for ESWL treatment were enrolled.

View Article and Find Full Text PDF

Urothelial carcinoma of the urinary bladder is a common clinical entity. Recently, researchers focused on the emerging clinical significance of histologic variants, because they may need special therapy and their prognosis differs. Hereby, we describe a case of a giant cell osteoclast-like urothelial carcinoma of the urinary bladder.

View Article and Find Full Text PDF

Purpose: Health-related quality of life (HRQoL) assessment has become an integral part of clinical research across different disciplines. However, the degree of incorporation of QoL standardized questionnaires in daily routine is variable. This survey study examined how HRQoL is perceived and utilized among urologists from the Hellenic Urological Association (HUA) in their daily practice.

View Article and Find Full Text PDF