The diagnosis of myasthenia gravis is made by a positive edrophonium test, repetitive nerve stimulation test of a weak muscle, and anti-acetylcholine receptor antibody assay. MRI of the mediastinum is now indicated to:

Radiology

The diagnosis of myasthenia gravis is made by a positive edrophonium test, repetitive nerve stimulation test of a weak muscle, and anti-acetylcholine receptor antibody assay. MRI of the mediastinum is now indicated to:

All of the following form radiolucent stones except:

The usual radiographic appearance of an osteosarcoma is:

A middle aged female presents with slowly progressive weakness of lower limbs,…