PSEUDOTUMOUR OF THE ORBIT: BILATERAL METACHRONOUS PRESENTATION

SUMMARY A case is presented of a pseudotumour that developed in the left orbit 4 years after surgery and histological confirmation of a pseudotumour in the right orbit. There was no evidence of any thyroid pathology.     

Rapid,low-cost MR imaging protocol to document central nervous system and sinus abnormalities prior to pediatric hematopoietic stem cell transplantation

Patients undergoing bone marrow transplant (BMT) are at risk for infectious complications, including those of the sinus. Central nervous system (CNS) abnormalities related to the chemotherapy or radiation that the patient received for the treatment of underlying malignancy or to transplant-related effects are also commonly seen. The only effective way to differentiate pre- and post-transplant causes is to have a baseline evaluation prior to the admission for transplant. The current method used to evaluate these patients is head CT. However, CT is not accurate to demonstrate CNS abnormalities and exposes the patient to radiation. MRI, despite better sensitivity for white matter abnormalities, has not been routinely used because of the higher cost and longer duration of the exam. Therefore, we designed a fast, low-cost and radiation-free MRI-based protocol to simultaneously evaluate sinus and brain abnormalities.