scholarly journals On the issue of mixed testicular tumors

2021 ◽  
Vol 19 (1) ◽  
pp. 44-57
Author(s):  
V. N. Parin
Keyword(s):  
Malignant Transformation ◽  
Microscopic Structure ◽  
Benign Neoplasms ◽  
Testicular Tumors

Mixed testicular tumors are of great interest both clinically and pathologically. Being in most cases benign neoplasms, they sometimes give rise to metastases, and in some cases are subjected to malignant transformation, so that their timely recognition is of particular value. In the pathological and anatomical sense these neoplasms are of interest in relation to their microscopic structure, often extremely complex in particular in relation to their histogenesis.

scholarly journals Malignant melanoma arising within ovarian mature cystic teratoma

2019 ◽  
Vol 9 (1) ◽  
pp. 1508-1510
Author(s):  
Aasiya Rajbhanari ◽  
Usha Manandhar
Keyword(s):  
Malignant Melanoma ◽  
Malignant Transformation ◽  
Cystic Teratoma ◽  
Mature Cystic Teratoma ◽  
Benign Neoplasms ◽  
Germ Layers

Mature cystic teratomas are frequently encountered neoplasms of the ovary that comprise of tissues derived from all three germ layers. They are benign neoplasms with malignant transformation noted rarely in around 0.1 to 3% cases. Among the various transformations, malignant melanoma is one of the least commonly encountered. Here, we report a case of 41 years old female with malignant melanoma arising within mature cystic teratoma.

Malignancies Arising in Oncocytic Schneiderian Papillomas

2001 ◽  
Vol 125 (10) ◽  
pp. 1365-1367 ◽  
Author(s):  
Anirban Maitra ◽  
Leland B. Baskin ◽  
Edward L. Lee
Keyword(s):  
Cell Carcinoma ◽  
Malignant Transformation ◽  
Small Cell Carcinoma ◽  
Medical Literature ◽  
Benign Neoplasm ◽  
Undifferentiated Carcinoma ◽  
Small Cell ◽  
Benign Neoplasms ◽  
Sinonasal Undifferentiated Carcinoma

Abstract Oncocytic schneiderian papillomas (OSPs) are uncommon benign neoplasms that arise from the sinonasal schneiderian epithelium. Malignancies arising in OSPs are rare, and, to our knowledge, only 14 such instances have been reported in the medical literature. We report 2 additional cases—a small cell carcinoma and a sinonasal undifferentiated carcinoma arising in OSPs and presenting synchronously with the benign neoplasm. The potential for malignant transformation in OSPs is small, but warrants that these papillomas be completely excised to exclude a coexisting carcinoma.

scholarly journals Malignant cylindroma in a patient with Brooke-Spiegler syndrome

2015 ◽  
pp. 61-65
Author(s):  
Liliane Borik ◽  
Patricia Heller ◽  
Monica Shrivastava ◽  
Viktoryia Kazlouskaya
Keyword(s):  
Malignant Transformation ◽  
Additional Case ◽  
Benign Neoplasms ◽  
Rare Neoplasm

Malignant cylindroma (cylindromatous carcinoma, cylindrocarcinoma) is the malignant counterpart of benign cylindroma. It is a rare neoplasm, more often developing in the setting of multiple pre-existing benign neoplasms. Herein we present an additional case of malignant transformation of the cylindroma diagnosed in an 83-year-old patient with known Brooke-Spiegler syndrome.

Application of Transmission Electron Microscope and Scanning Electron Microscope in experimental tumor studies

1990 ◽  
Vol 48 (3) ◽  
pp. 306-307
Author(s):  
Gao Fengming
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Malignant Transformation ◽  
Transmission Electron Microscope ◽  
Experimental Tumor ◽  
Transmission Electron ◽  
Embryo Cells ◽  
Tumor Studies ◽  
Scanning Electron

Transmission electron microscope(TEM) and scanning electron microscope(SEM) were widely used in experimental tumor studies. They are useful for evaluation of cellular transformation in vitro, classification of histological types of tumors and treating effect of tumors. We have obtained some results as follows:1. Studies on the malignant transformation of mammalian cells in vitro. Syrian golden hamster embryo cells(SGHEC) were transformed in vitro by ThO2 and/or ore dust. In a few days after dust added into medium, some dust crystals were phagocytized. Two weeks later, malignant transformation took place. These cells were of different size, nuclear pleomorphism, numerous ribosomes, increasing of microvilli on cell surface with various length and thickness, and blebs and ruffles(Figs. 1,2). Myelomonocytic leukemic transformation of mouse embryo cells(MEC) was induced in vitro by 3H-TdR. Transformed cells were become round from fusiform. The number of mitochondria and endoplasmic reticulum was reduced, ribosomes and nucleoli increased, shape of nuclei irregular, microvilli increased, and blebs and ruffles appeared(Fig. 3).

1218: Organ Sparing Surgery in Small Testicular Tumors does not Lead to Development of Antisperm Antibodies

2007 ◽  
Vol 177 (4S) ◽  
pp. 401-401
Author(s):  
Nicolai Leonhartsberger ◽  
Thomas Akkad ◽  
Christian Gozzi ◽  
Georg Bartsch ◽  
Hannes Steiner
Keyword(s):  
Antisperm Antibodies ◽  
Testicular Tumors ◽  
Organ Sparing

378: 14-3-3 Expression Patterns in the Human Kidney: From Fetal Development to the Adult State to Malignant Transformation

2005 ◽  
Vol 173 (4S) ◽  
pp. 103-103
Author(s):  
Adam G. Baseman ◽  
Andrew J. Kirsch ◽  
Fray F. Marshall ◽  
Haiyen E. Zhau ◽  
Leland W.K. Chung ◽  
...  
Keyword(s):  
Malignant Transformation ◽  
Fetal Development ◽  
Expression Patterns ◽  
Human Kidney

1501: High Prevalence of Testicular Tumors in Non Obstructive Azoospermic Men

2005 ◽  
Vol 173 (4S) ◽  
pp. 406-407
Author(s):  
Mario Mancini ◽  
Luca Carmignani ◽  
Giacomo Gazzano ◽  
Franco Gadda ◽  
Silvana Bosari ◽  
...  
Keyword(s):  
Testicular Tumors ◽  
High Prevalence
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