Search results for "Dysgerminoma"
showing 7 items of 7 documents
Intermediate filaments and desmosomal plaque proteins in testicular seminomas and non-seminomatous germ cell tumours as revealed by immunohistochemis…
1987
Seminomas and non-seminomatous testicular germ cell tumours were studied for the presence of cytokeratin and vimentin filaments and desmosomes using immunohistochemical methods. In the majority of the classical seminomas and in seminomatous areas of mixed tumours most tumour cells appeared to lack cytokeratin filaments. Some seminomas contained a focally variable proportion of cells exhibiting cytokeratin-positive structures while other cases contained only few seminoma cells with a well developed fibrillar cytokeratin network. Gel electrophoresis of cytoskeletal proteins from microdissected regions revealed cytokeratin polypeptides nos. 8 and 18 typical of simple epithelia. In one seminoma…
786 Fertility-sparing and minimally invasive surgery in patients with stage I malignant ovarian germ cell tumours in Germany
2021
Introduction/Background* Malignant ovarian germ cell tumours (OGCT) often affect women of younger age at an early stage of disease who may desire fertility conservation. The Arbeitsgemeinschaft fuer Gynaekologische Onkologie (AGO) has established a clinicopathological (Current Ovarian geRm cell and SEx cord stromal Tumour Treatment strategies, CORSETT) database to describe treatment strategies and outcomes for these women. Methodology 20 German centres entered mixed retro- and prospective data of 56 FIGO stage I OGCT patients treated between 2000 to 2014 into the CORSETT database. An independent CORSETT pathology reference panel re-evaluated the primary histological diagnosis. A descriptive…
Vergleichende Untersuchungen �ber Morphologie und Histogenese des Seminoms und Disgerminoms
1951
An Hand eingehender morphologisch-histologischer Untersuchungen von Seminom und Disgerminom wird die Verwandtschaft beider Tumoren einer kritischen Stellungnahme unterzogen mit dem Ergebnis: 1. Seminom und Disgerminom sind morphologisch gleichartige Tumoren. 2. Als Mutterzelle mus die noch nicht geschlechtsspezifisch differenzierte Keimzelle aufgefast werden. 3. Seminome und Disgerminome sind keine Teratome, sie sind bestenfalls mit den Teratomen uber eine allen gemeinsame Mutterzelle verwandt.
Ocular pseudomyasthenia: report of a case with a pineal region tumor.
1991
A case presenting with clinical features of ocular myasthenia and a false-positive edrophonium test is reported. Brain CT and MRI scan revealed a pineal region tumor histologically verified as germinoma. We recommend evaluating patients with clinical features of myasthenia gravis (MG) confined to the ocular muscles for intracranial mass lesions.
Malignant ovarian germ cell tumors in pediatric patients: The AIEOP (Associazione Italiana Ematologia Oncologia Pediatrica) study.
2017
Objective Malignant ovarian germ cell tumors (MOGCT) carry an excellent prognosis, and the treatment aims to achieve results with the least possible treatment-related morbidity. The aim of this study was to assess the outcomes of pediatric patients with MOGCT. Methods Patients were treated according to their stage: surgery and surveillance for stage I; a modified bleomycin–etoposide–cisplatin (BEP) regimen for stages II (three cycles), III, and IV (three cycles) with surgery on residual disease. Results Seventy-seven patients were enrolled (median age 11.8 years), 26 with dysgerminoma (Dysg), 13 with immature teratoma and elevated serum alpha-fetoprotein levels (IT + AFP), and 38 with nondy…
The Value of Sonography and Lymphography in the Detection of Retroperitoneal Metastases in Testicular Tumors
1979
Lymphography has led to falsely negative or falsely positive diagnoses in 10 to 45 per cent of the cases of testicular tumor metastases reported in the literature. In our comparative study of lymphography and sonography in the preoperative staging of 29 malignant testicular tumors lymphography was accurate in 58.5 per cent of the cases, while sonography had an accuracy rate of 82.5 per cent. Sonography was superior to lymphography in the evaluation of hilar lymph node metastases and their extent, as well as for routine checkups after lymphadenectomy or irradiation.
Heterogeneity of intermediate filament expression in human testicular seminomas.
1990
Testicular seminoma has in the past been considered to represent a germ cell tumor incapable of further differentiation. In recent years this view has been challenged on the basis of morphologic and chromosomal studies. Moreover, studies of intermediate filaments (IF) of seminoma cells have provided evidence of the capability of seminoma cells to differentiate in different directions. In the present study of the IF protein profile of 26 human testicular seminomas, using frozen as well as formalin-fixed, paraffin-embedded tissues, we report evidence of a heterogeneous differentiation potential inherent in these neoplasms. Thus, in 4 of the seminomas neither cytokeratins nor vimentin were det…