Differentiation between epididymo-orchitis and torsion testis can be done with which of the following?

Radiology

Differentiation between epididymo-orchitis and torsion testis can be done with which of the following?

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,…