Papillary carcinoma arising in a thyroglossal duct cyst; two case reports and review of the literature.

We present in this report two cases of papillary carcinoma arising in a thyroglossal duct cyst. The first case was a 32-year-old female patient who presented with a neck mass of 5 years' duration that had recently increased in size. The patient was otherwise asymptomatic.

Silent pituitary infarction after coronary artery bypass grafting procedure: case report and review of literature.

Objective: To report a case of silent pituitary infarction that occurred after a coronary artery bypass grafting procedure and review the relevant literature.

Methods: We describe a female patient with silent pituitary infarction several months after a coronary artery bypass operation and discuss her presentation, clinical findings, and laboratory evaluation. We also review similar cases in the literature.

Extreme elevation of intrasellar pressure in patients with pituitary tumor apoplexy: relation to pituitary function.

The dominant mechanism for hypopituitarism and hyperprolactinemia commonly observed in patients with pituitary macroadenomas was postulated to be increased intrasellar pressure (ISP) caused by the slow and gradual expansion of adenomas within the sella turcica. Hemorrhagic infarction of adenomas (pituitary tumor apoplexy) is associated with a rapid, rather than gradual, increase in intrasellar contents. The impacts of the sudden increase in intrasellar contents on ISP and pituitary function are unknown.

Endocrine changes in a rat model of chronic hypoxia mimicking cyanotic heart disease.

Objective: The endocrine system plays an important role in the adaptation to hypoxia. The aim of this study is to assess the effect of chronic hypoxia on endocrine changes in a neonatal animal model mimicking cyanotic heart disease.

Methods: Sprague-Dawley rats were placed in a normobaric hypoxic environment at birth and oxygen levels were maintained at 10% in an airtight Plexiglas chamber.