Results 271 to 280 of about 78,011 (319)

Yolk sac sign: sonographic appearance of the fetal yolk sac in missed abortion.

open access: bronzeJournal of Ultrasound in Medicine, 1986
With improving technology, the fetal yolk sac can be routinely visualized sonographically in all living gestations of six to ten weeks. The minimal growth of the yolk sac during this interval and its subsequent obscuration by the growing amniotic sac are verified in this study.
Shepard R. Hurwitz
openaire   +4 more sources

Ovarian yolk sac tumor

International Journal of Gynecological Cancer, 2021
Ovarian germ cell tumors derive from ovarian germ cells and account for approximately 20% of all ovarian neoplasms. Only 1–2% of ovarian germ cell tumors are called malignant ovarian germ cell tumors and constitute approximately 3–5% of all malignant ovarian neoplasms.[1][1] Yolk sac ...
Teresa Iscar   +3 more
openaire   +3 more sources

Yolk sac tumors of the ovary and the human yolk sac

American Journal of Obstetrics and Gynecology, 1987
In the present study a comparison was made between human yolk sacs and yolk sac tumors. Tubules surrounded by several to as many as 10 endodermal cells and intracellular tubules in one endodermal cell were frequently observed. The tubules were seen abundantly in the yolk sac of a 4-week pregnancy, and they resembled the reticular pattern of the yolk ...
Yuugi Kanda   +5 more
openaire   +3 more sources

Yolk Sac Carcinoma

Southern Medical Journal, 1976
Yolk sac carcinoma is an uncommon neoplasm which has appeared under a variety of names. It has been reported not only in gonadal sites but also in the mediastinum, pineal body, and sacral areas. The typical histologic appearance of this tumor and the variety of locations are demonstrated by four case reports. A 57-year-old patient with an ovarian tumor
Brown, Green Jd
openaire   +3 more sources

The human yolk sac and yolk sac carcinoma

Human Pathology, 1976
The ultrastructure of the yolk sac of a 39 day old human embryo was studied. The subcellular organization was suggestive of a highly specialized absorptive function proceeding in an exocelomic-viteline direction. These findings, compatible with intense metabolic activity, are at variance with the concept of rapid involution of the yolk sac following ...
Frank Gonzalez-Crussi, Lawrence M. Roth
openaire   +3 more sources

Yolk Sac Tumor of the Bladder

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
openaire   +3 more sources

Archenteronoma (yolk sac tumors)

Journal of Pediatric Surgery, 1978
Ten 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
openaire   +3 more sources

Pelvic yolk sac tumor

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
openaire   +4 more sources

Histogenesis of the yolk sac in the chick

Canadian Journal of Zoology, 1973
The 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
openaire   +3 more sources

Cytodiagnosis of yolk sac tumor

The Indian Journal of Pediatrics, 2004
To 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
openaire   +3 more sources

Home - About - Disclaimer - Privacy