Fibroepithelial Lesion Spectrum: A Case Report Documenting a Possible Transformation to a Malignant Phyllodes Tumor.

We discuss the radiological-pathological aspects of a rare case of transformation of a presumed fibroadenoma (FA) to a malignant phyllodes tumor (PT) and review the literature. Phyllodes tumors often show heterogeneous histologic features with some areas indistinguishable on core needle biopsy. A core biopsy is often a small representation of a larger lesion.

Giant mucocele secondary to cocaine abuse.

Mucoceles are benign lesions originating in the paranasal sinuses. Presented here is a novel case of a giant frontoethmoidal mucocele extending into the orbit and causing proptosis. The etiology was chronic transnasal cocaine abuse leading to extensive scarring and distortion of the nasal anatomy.

Rare case of a radiographically occult sacral lesion detected on MRI presenting with intractable back pain.

We report the imaging findings and histopathology of a rare case of sacral hibernoma in a female presenting with right buttock pain while sitting. The lesion was occult on radiographs and CT scan. A small, rounded right S2 lesion was hypointense on weighted images and hyperintense on short tau inversion-recovery images.

Passive Posterior Tibial Subluxation on Routine Knee MRI as a Secondary Sign of PCL Tear.

The posterior drawer test is an accurate clinical test to diagnose posterior cruciate ligament (PCL), indicating laxity of the PCL that allows posterior tibial translation. This study aimed to determine whether posterior tibial translation relative to the femur on routine MRI could serve as an additional sign of PCL tear. Routine knee MRI in eleven patients (7 males, 4 females) with arthroscopically confirmed isolated PCL tears were reviewed independently by two musculoskeletal radiologists.

Comparison of Insall-Salvati ratios in children with an acute anterior cruciate ligament tear and a matched control population.

Objective: An anterior cruciate ligament (ACL) injury is an increasingly recognized cause of knee pain in young patients and in athletes in particular and can be detected non-invasively with MRI. Anecdotal information suggests that patella alta may be more common in the setting of this injury, but no study has documented this phenomenon. This study sought to test whether an ACL tear is associated with an increased Insall-Salvati ratio suggestive of patella alta.