Mass at any site in sympathetic nervous system, most commonly in the abdomen adrenal.
At diagnosis limited to single organ, locally or regionally invasive, or widely disseminated. Bone, marrow, liver, skin among most common metastatic sites. Symptoms depend on site, abdomen: digestive, hepatomegaly. chest: respiratory distress, dysphagia,circulatory problems. cerv:palpable mass,pelvis:dysuria,constipation