Central diabetes insipidus (DI) can be the outcome of a number of diseases that affect the hypothalamic-neurohypophyseal axis. The causes of the condition can be classified as traumatic, inflammatory, or neoplastic. Traumatic causes include postoperative sella or transection of the pituitary stalk, while infectious or inflammatory causes include meningitis, lymphocytic hypophysitis, and granulo...

Primary intracranial melanoma is uncommon, and primary malignant melanoma of the sella turcica is exceedingly rare. We describe a 35-year-old woman who presented with endocrine dysfunction and CT findings suggestive of a prolactinsecreting macroadenoma. Subsequent MR findings revealed homogeneously short T1 and T2 relaxation times, yielding uniformly bright signal on T1 -weighted images and dar...

Reactive systems, proposed by Leifer and Milner, represent a meta-framework aimed at deriving behavioral congruences for those specification formalisms whose operational semantics is provided by rewriting rules. Despite its applicability, reactive systems suffered so far from two main drawbacks. First of all, no technique was found for recovering a set of inference rules, e.g. in the so-called ...

We present a case report of a patient on long-term dialysis who underwent percutaneous vertebroplasty to treat a painful intrabody vertebral cleft and who subsequently experienced a refracture of the posterior portion of the same vertebral body, resulting in anterior displacement of the cement through the anterior cortex. The case raises the question whether, in some patients, the marrow space ...

A retrospective study was undertaken of 1005 normal contrast-enhanced head computed tomographic (CT) scans in children to determine normal standards for pituitary stalk diameter, basilar artery diameter, and their ratio for age and gender. The pituitary stalk enlarges with age, and girls have larger stalks than do boys after age 8. The pituitary stalk-to-basilar artery ratio is easily estimated...