Faculty Bibliography

OBJECTIVE: To define and compare early lesions associated with slipped capital femoral epiphysis (SCFE) on magnetic resonance imaging (MRI), computed tomography (CT) and radiography. DESIGN AND PATIENTS: Thirteen patients with 15 symptomatic hips due to SCFE underwent radiography and MRI; CT was performed in 12 patients. SCFE was graded on radiographs, head/neck angles and qualitative changes were evaluated on CT, and morphologic/signal abnormalities were determined on MRI. RESULTS: Physeal widening, apparent on T1-weighted MRI, was evident in every case of SCFE, including one presumed "pre-slip." T2-weighted images demonstrated synovitis and marrow edema but obscured physeal abnormalities. CT head/neck angles ranged from 4-57 degrees for symptomatic to 0-14 degrees for asymptomatic hips. Physeal and metaphyseal changes were variably identified on both radiographs and CT in all cases of SCFE, but not in the pre-slip. CONCLUSION: MRI clearly delineates physeal changes of both pre-slip and SCFE, and demonstrates very early changes at a time when radiographs and CT may appear normal.

OBJECTIVE: This retrospective study analyzed the CT characteristics of mullerian mixed tumors. Clinical aspects, outcomes, and pathologic correlations were also evaluated. CONCLUSION: Mullerian mixed tumor is a rapidly growing aggressive tumor with a relatively poor prognosis. Uterine and metastatic masses showed central low attenuation. Metastatic masses often had irregular enhancement centrally and surface enhancement circumferentially. The tendency toward local and lymphatic spread and intraperitoneal seeding was greater than the tendency toward hematogenous metastases. CT was useful before surgery in defining the extent of disease and for follow-up clinical management in identifying metastases and assessing treatment effectiveness.