A Huge Hydatid Pulmonary Cyst.

This case report describes a patient with an unusually large pulmonary hydatid cyst and discusses important management issues.

The role of sacroiliac joint dysfunction in the genesis of low back pain: the obvious is not always right.

Background Context: It is a common practice to the link low back pain with protruding disc even when neurological signs are absent. Because pain caused by sacroiliac joint dysfunction can mimic discogenic or radicular low back pain, we assumed that the diagnosis of sacroiliac joint dysfunction is frequently overlooked.

Purpose: To assess the incidence of sacroiliac joint dysfunction in patients with low back pain and positive disc findings on CT scan or MRI, but without claudication or objective neurological deficits.

Determining minimum alveolar anesthetic concentration of halothane in rats: the effect of incremental change in halothane concentration and number of crossovers.

Computer simulations for the technique of estimating minimum alveolar anesthetic concentration (MAC) in patients (quantal design) suggest that incremental concentration changes and the number of crossovers affect MAC. We hypothesized that these variables may also apply to estimating MAC in rats (bracketing design). This study tested that hypothesis and also examined whether these variables might mask differences in MAC between groups in which MAC might be expected to differ (pregnant [P] versus nonpregnant [NP]).