منابع مشابه
Hypophyseal tumors induced by estrogenic hormone.
The effects of estradiol benzoate (EB) injection on sexual development and the pituitary gland were studied in 240 immature rats after 16 weeks of treatment. Treatment resulted in eunuchoid dwarfing. Males showed enlargement of the pituitary after 4 months, while in females it remained normal. After continued treatment for 8 months, enormous hypophyseal tumors were observed in 29 of 35 rats ...
متن کاملBile duct tumors.
Bile duct tumors are benign or malignant lesions which may be associated to risk factors or potentially malignant lesions. They constitute an heterogenous entities group with a different biological behavior and prognosis according to location and growth pattern. We revise the role of the radiologist in order to detect, characterize and stage these tumors, specially the importance of their class...
متن کاملUltracentrifugation of hypophyseal growth hormone.
Sedimentation velocity was measured in a Spinco ultracentrifuge’ operating at 165,000 X g. The hormone solutions (0.5 per cent) were prepared with borate buffer of pH 9.7 or saline at pH 9.1. Table I presents a typical run in a borate buffer; the sedimentation velocity constant was calculated by the procedure described by Svedberg and Pedersen (3). It may be noted that the individual values of ...
متن کاملImaging Features of Malignant Lacrimal Sac and Nasolacrimal Duct Tumors.
The purpose of this study was to present the imaging features of primary and secondary malignant lacrimal sac and nasolacrimal duct tumors and their pattern of tumor spread in 18 patients. The most common tumor histology in our series was squamous cell carcinoma. In 15/18 patients, tumor involved both the lacrimal sac and duct at the time of diagnosis. In 11/16 patients on CT, the nasolacrimal ...
متن کاملHypophyseal triplication: case report and embryologic considerations.
SUMMARY Hypophyseal triplication is malformation that has not been described previously. We present a child with midline abnormalities who underwent epignathus excision at birth. Brain MR imaging revealed 2 paired lateral pituitary glands and an oval midline gland, each with an independent stalk, connected to a thickened third ventricle floor. Because malformations represent a failure in embryo...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1920
ISSN: 0003-4932
DOI: 10.1097/00000658-192011000-00001