<prompt> What is the cause for enlargement of muscle shown in this CT-scan?PseudotumorMyositisRhabdomyosarcomaGraves ophthalmopathy  <response>: Ans. d Graves ophthalmopathyRef: Parsons, 22e, p. 487Thyroid eye disease produce typical Fusiform enlargement of extraocular muscles and spares the tendon. 