Location: lower extremities, retroperitoneum

Insidious in onset
Deep seated
Ill defined mass
Pain
Tenderness
Functional disturbance
Weight loss
Emaciation

Retroperitoneal tumors

Diffuse abdominal enlargement
Abdominal pain
Weight loss
Intestinal involvement
Anorexia
Vomiting
Constipation
Diarrhea
Painful defecation
Displacement & compression of kidney or ureter
Hydronephrosis
Pyelonephritis
Uremia
Pyrexia