MR Appearance and Clinical Significance of Changes in the Hip Muscles and Iliopsoas Tendon After Arthroscopic Iliopsoas Tenotomy in Symptomatic Patients.

Background: Iliopsoas tenotomy is a treatment for snapping hip. Does this surgical procedure change the surrounding muscle and tendon anatomy?

Questions/purposes: This study seeks to evaluate the changes in the MR appearance of the hip muscles and iliopsoas tendon in patients following arthroscopic iliopsoas tenotomy.

Methods: One hundred sixty-nine consecutive adults were evaluated after iliopsoas tenotomy at the lesser trochanter.

Presacral masses: multimodality imaging of a multidisciplinary space.

The presacral space is a clinically important space that is relevant to multiple disciplines and lies at the intersection of the axial skeleton, neural axis, and pelvic soft tissues. A wide variety of benign and malignant conditions may derive from its various elements. An appropriate differential diagnosis may be formulated from a more comprehensive list by considering the specific imaging features of a given case: In particular, involvement of the sacrum (either remodeling or destruction) and the presence or absence of a solid, soft-tissue component may help narrow the differential diagnosis.

Low rates of cancer or high-grade dysplasia in colorectal polyps collected from computed tomography colonography screening.

Background & Aims: In patients with polyps detected at computed tomography colonography (CTC) screening, management decisions are influenced by the likelihood of important polyp histology. We assess the rates of cancer and high-grade dysplasia among patients found to have small (6-9 mm) and large (>or=10 mm) colorectal polyps at CTC.

Methods: We reviewed results from 5124 consecutive adults (mean age, 56.