Results 281 to 290 of about 78,011 (319)
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Hemopoiesis in the human yolk sac
American Journal of Anatomy, 1989AbstractThe endodermal layer of the human yolk sac was examined three‐dimensionally with light microscopy on serial sections using scanning electron microscopy and transmission electron microscopy to find the origin of hemo poiesis in the yolk sac. Cell‐labelling techniques were also employed using the monoclonal anti‐transferrin receptor antibody ...
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BJOG: An International Journal of Obstetrics & Gynaecology, 1974
SummaryWithin the last two years we have seen four examples of a highly malignant neoplasm in young patients for which the name yolk sac tumour is recommended. We now describe the pathology and discuss the histogenesis of these tumours. The collection of information about them is impeded by the variety of names applied to them.
J. O. W. Beilby, P. J. Todd
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SummaryWithin the last two years we have seen four examples of a highly malignant neoplasm in young patients for which the name yolk sac tumour is recommended. We now describe the pathology and discuss the histogenesis of these tumours. The collection of information about them is impeded by the variety of names applied to them.
J. O. W. Beilby, P. J. Todd
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Histopathology, 1995
We report the second known case of yolk sac tumour of the external auditory canal, occurring in an eight‐month‐old girl. The excised tumour demonstrated histopathological and immunohistochemical features identical to those of yolk sac tumours of gonadal origin. The tumour was aneuploid by flow cytometry.
Yoshio Miyazawa +4 more
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We report the second known case of yolk sac tumour of the external auditory canal, occurring in an eight‐month‐old girl. The excised tumour demonstrated histopathological and immunohistochemical features identical to those of yolk sac tumours of gonadal origin. The tumour was aneuploid by flow cytometry.
Yoshio Miyazawa +4 more
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Sonographic Evaluation of the Yolk Sac
Journal of Ultrasound in Medicine, 2012This pictorial essay aims to inform related clinicians by summarizing the normal and abnormal sonographic findings of the yolk sac in the first trimester of pregnancy. An abnormality in the sonographic appearance of a yolk sac can predict subsequent embryonic death or abnormalities. Therefore, the accurate recognition of normal and abnormal sonographic
Halil Arslan +2 more
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Yolk Sac Tumor of the Mandible
Journal of Oral and Maxillofacial Surgery, 2008Malignant germ cell tumors represent 3% of neoplasms in the pediatric population. Yolk sac tumors (endodermal sinus tumors) are the most common malignant germ cell tumors in this age group. In young children, the majority of these tumors affect extragonadal sites, principally the sacrococcygeal region.
Nalton F. Ferraro +3 more
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Ultrasonographic measurement of the yolk sac
BJOG: An International Journal of Obstetrics & Gynaecology, 1982Summary. Ultrasonographic measurements of the yolk sac were made during first trimester in 100 pregnancies. The results were related to the crown‐rump length of the embryos and showed an increase in size from 7 to 11 weeks menstrual age. A possible relation between anomalies in yolk sac development and embryonic development was studied in six patients
N. Exalto +3 more
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Journal of Paediatrics and Child Health, 1972
SYNOPSISThis is a report of a rare, very malignant ovarian tumour occurring in a 12 year old Italian girl.An aggressive approach was adopted which included excision of the primary tumour under cover of chemotherapy, followed by a second exploratory laparotomy, and excision of a single pulmonary metastasis.
J. D. Aberdeen, J. N. Santamaria
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SYNOPSISThis is a report of a rare, very malignant ovarian tumour occurring in a 12 year old Italian girl.An aggressive approach was adopted which included excision of the primary tumour under cover of chemotherapy, followed by a second exploratory laparotomy, and excision of a single pulmonary metastasis.
J. D. Aberdeen, J. N. Santamaria
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1985
Yolk sac tumor (YST) or endodermal sinus tumor is the most common malignant germ cell tumor of the testis in children, and is the second most frequent malignant germ cell tumor of the ovary, being exceeded in frequency by dysgerminoma (seminoma). The incidence of malignant tumors of the testis was 1.0 cases per million U.S.
Daniel M. Green, Daniel M. Green
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Yolk sac tumor (YST) or endodermal sinus tumor is the most common malignant germ cell tumor of the testis in children, and is the second most frequent malignant germ cell tumor of the ovary, being exceeded in frequency by dysgerminoma (seminoma). The incidence of malignant tumors of the testis was 1.0 cases per million U.S.
Daniel M. Green, Daniel M. Green
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Glycans of the early human yolk sac
The Histochemical Journal, 1995The pattern of glycan distribution in the early human yolk sac has been investigated using a panel of lectins. Two 6-week and one 8-week human yolk sacs, and one 8-week fetal liver from live, ectopic pregnancies were fixed and embedded in epoxy resin. Lectin histochemistry was carried out on sections of these tissues using 23 biotinylated lectins and ...
Jones, Carolyn J P +2 more
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Pure Yolk-Sac Tumor of the Lung
Asian Cardiovascular and Thoracic Annals, 2008Primary germ cell tumors of the chest often localize in the anterior mediastinal compartment. Such tumors originating from lungs and pleura are rare. Chest tomography revealed a mass in the middle lobe of the right lung in a 25-year-old man. A middle lobe medial segmentectomy was performed, and chemotherapy was applied postoperatively.
Basoglu A. +4 more
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