Katerina Kontogianni-Katsarou

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Uterine leiomyomas are extremely rare neoplasms in the pediatric and adolescent population. We report a case of a giant uterine leiomyoma measuring 30 cm in the largest diameter in a 16-year-old girl. To our knowledge this is the largest leiomyoma reported thus far in women under the age of 20 years. The patient was admitted to our hospital for the(More)
OBJECTIVE To study the histopathological features of mesenchymal tumors of the uterine corpus with heterologous and hematopoietic components, and review their histogenesis and differential diagnosis from other neoplastic and non-neoplastic lesions. METHODS Ten cases of mesenchymal tumors of the uterine corpus, massively infiltrated by hematopoioetic(More)
AIM To study the association of the frequency and pattern of KIT and PDGFRA mutations and clinicopathological factors in a group of patients with gastrointestinal stromal tumors (GIST). METHODS Thirty patients with GIST were examined. Exons 9, 11, 13, and 17 of the KIT and exons 12 and 18 of the PDGFRA gene were analyzed for the presence of mutations by(More)
The Ets-related gene fusions are among the most common molecular alterations in prostate cancer (PCa) and are detected in more than 50 % of PCas. Transmembrane protease serine 2 and Ets-related gene fusion (TMPRSS2-ERG) is the most frequently identified chimeric gene and has been associated with undifferentiated and invasive phenotypes. TMPRSS2-ERG has also(More)
The development of ectopic decidua is generally considered as a physiologic phenomenon of pregnancy, even though it has been occasionally noted in non-pregnant women. We present three cases of ectopic decidua located in the greater omentum and discuss the histopathologic characteristics, as well as the problems encountered in the differential diagnosis from(More)
AIM To investigate the incidence of KIT immunohistochemical staining in (GI) stromal tumors (GISTs), and to analyze the clinical manifestations of the tumors and prognostic indicators. METHODS We retrospectively analyzed 50 cases of previously diagnosed GISTs. Tissue samples were assessed with KIT (CD117 antigen), CD34, SMA, desmin, S-100, NSE, PCNA,(More)
In this article, we describe the first, to our knowledge, reported case of severe bacteremic upper urinary tract infection with pyonephrosis-in the context of prior chronic urinary tract disease-caused by community-acquired methicillin-resistant Staphylococcus aureus (MRSA). The patient presented with fever and constitutional symptoms, and computed(More)
During the last 15 years in the Pathology Laboratory of Aretaieion University Hospital, 256 cases of teratomas were examined and 11 cases (4.3%) presented characteristics of struma ovarii. Eight patients aged 19-34 years and four 41-74 years (median 41 years). One 74-year-old patient presented with virilization signs but pain and a pelvic mass were the most(More)
Vascular lesions comprise benign and malignant neoplasms as well as non-neoplastic conditions that may be located in various sites but only rarely in the pelvis or the retroperitoneum. In our study we describe five diverse and unusual cases of vascular lesions of the pelvis, retroperitoneum and colon in female patients: a case of retroperitoneal(More)
The clinicopathological characteristics are presented of 19 extragenital cystic lesions of female patients located at the retroperitoneum (9 cases), the mesentery (6 cases) and the peritoneum (4 cases). Median age was 42.3 years and the main symptom was abdominal pain. The cysts measured 4-27 cm in diameter and were classified as: epithelial (7/19),(More)