The prognosis of rhabdomyosarcoma is likely to be poor if the site of the tumour is:
Orbit
Extremity
Para testicular
Urinary bladder
The prognosis of rhabdomyosarcoma is likely to be poor if it involves the extremity. Extremity rhabdomyosarcomas in adolescents and young adults usually have alveolar histologic characteristics and carry a worse prognosis. Other poor prognostic factors associated with it includes age less than 1 and more than 10 years, alveolar histology, unorable primary size, size greater than 5cm and higher clinical group. Ref: CURRENT Diagnosis and Treatment: Surgery, 13th Edition, Chapter 43; Radiation Oncology: Management Decisions By K. S. Clifford Chao, 3rd Edition, Page 755; Kelley's Essentials of Internal Medicine By H. David Humes, 2nd Edition, Page 445.