Results 281 to 290 of about 202,395 (319)
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Journal of Urology, 1983
A 1-year-old white boy presented with hematuria and was found to have a large polypoid bladder mass. Light and electron microscopic, and immunohistochemical diagnosis was a yolk sac (endodermal sinus) tumor. This is the first case of a primary yolk sac tumor of the bladder to be described in the English literature.
K. Mancer +3 more
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A 1-year-old white boy presented with hematuria and was found to have a large polypoid bladder mass. Light and electron microscopic, and immunohistochemical diagnosis was a yolk sac (endodermal sinus) tumor. This is the first case of a primary yolk sac tumor of the bladder to be described in the English literature.
K. Mancer +3 more
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Archenteronoma (yolk sac tumors)
Journal of Pediatric Surgery, 1978Ten cases of archenteronoma are reviewed with a follow-up between 2 mo and 7 yr. Their presentation was similar to that of rhabdomyosarcoma except for testicular tumors that may present as a hydrocele. A good prognosis was found with tumors amenable to primary resection and chemotherapy.
S.J. Cohen, A.E. Mackinnon
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The Spine Journal, 2016
A1-year-old infant presented to our hospital with a pelvic mass. There was no history of surgery, and the clinical examination revealed a pelvic palpable lesion. Magnetic resonance imaging showed a pelvic mass that was heterogeneous on T1-weighted and T2-weighted images, and it was heterogeneously enhanced after contrast administration (Fig.
POLAT, Gökhan +4 more
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A1-year-old infant presented to our hospital with a pelvic mass. There was no history of surgery, and the clinical examination revealed a pelvic palpable lesion. Magnetic resonance imaging showed a pelvic mass that was heterogeneous on T1-weighted and T2-weighted images, and it was heterogeneously enhanced after contrast administration (Fig.
POLAT, Gökhan +4 more
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Histogenesis of the yolk sac in the chick
Canadian Journal of Zoology, 1973The histogenesis of the chick yolk sac was studied from incubation day 3 to posthatching day 8. During incubation the epithelial lining forms complex folds which penetrate into the yolk mass. Hemopoiesis is at a maximum between incubation days 11 and 13.
Bernhard H. J. Juurlink, M. A. Gibson
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Cytodiagnosis of yolk sac tumor
The Indian Journal of Pediatrics, 2004To analyze cytomorphologic features of yolk sac tumors of childhood. Four cases of pediatric yolk sac tumor (YST), diagnosed by fine needle aspiration cytology were reviewed (1998-2002). Age of patients ranged from 1(1/2) to 5 years. Three cases presented clinically with an intra-abdominal mass while one case presented with a testicular mass.
R S Chana, Nishat Afroz, Nazoora Khan
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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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