“…pPNET often occur in the thoracopulmonary region (Askin tumor), retroperitonium, and extremities [ 11 ]. Uncommon locations include the thyroid [ 12 ], kidney [ 13 ], breast [ 14 ], nose [ 15 ], adrenal gland [ 16 ], prostate [ 17 ], head and neck [ 18 ], abdomen, pelvic soft tissues [ 9 ], and bone [ 19 ]. Our patients had tumors in bone ( n = 19: limbs 11, vertebrae 4, craniofacial skeleton 4), soft tissue ( n = 10: pelvis 2, retroperitoneum 2, groin 1, nasopharynx 1, chest wall 2, mediastinum 2), and organs ( n = 7: parotid 1, pulmonary 4, spleen 1, liver 1).…”