Presence of the posterior pituitary bright spot sign on MRI in the general population: a comparison between 1.5 and 3T MRI and between 2D-T1 spin-echo- and 3D-T1 gradient-echo sequences.

Purpose: To describe the prevalence of the posterior pituitary bright spot (PPBS) in the general population on 1.5 and 3T MRI examinations and on 2D-T1 spin-echo (SE) and 3D-T1 gradient-echo (GE) sequences.

Materials And Methods: 1017 subjects who received an MRI of the brain for aspecific neurological complaints were included.

Spontaneous rupture: a rare complication of hepatic hemangiomas.

Hepatic lesions are one of the possible visceral causes of spontaneous hemoperitoneum. Hepatic hemangiomas are congenital vascular malformations and are the most common benign tumours of the liver. Most cases are asymptomatic.

Mechanical factors explain development of cam-type deformity.

Objective: A cam-type deformity drastically increases the risk of hip osteoarthritis (OA). Since this type of skeletal anomaly is more prevalent among young active adults, it is hypothesized that the loading conditions experienced during certain types of vigorous physical activities stimulates formation of cam-type deformity. We further hypothesize that the growth plate shape modulates the influence of mechanical factors on the development of cam-type deformity.