ABSTRACT
Objective To explore the CT manifestations of primitive neuroectodermal tumor (PNET) of adrenal gland,aiming to increase the cognition on this disease.Methods The CT manifestations of 7 patients who were pathologically diagnosed with adrenal gland PNET were analyzed retrospectively.Results The age of patients was 24-63 years old,with average age of (47.6±13.7) years,including 6 females and 1 male.Location of PNET:4 in left adrenal gland and 3 in right adrenal gland.Clinical manifestations:3 cases had upper abdominal distension,2 cases suffered from pain of waist and back,1 case was discovered in physical examination and another 1 had fever.No abnormality was found in laboratory and endocrinological examinations.After operation,4 cases had recurrence and 2 had distant metastasis.During follow-up,6 patients died and only 1 still alive.CT showed that the tumor,whose maximum diameter was 10.1-19.4 cm,was elliptic or lobulated in shape.The tumor was clear in boundary in 2 patients,but was unclear in boundary and involved adjacent organs in 5 patients.The plain scanning showed equidensity or slightly low density,complicated with necrosis and cystic lesions without calcification.The enhanced scanning suggested progressive uneven enhancement,with multiple interatrial septum-like changes and latticed enhancement inside.Conclusion CT manifestations of adrenal gland PNET can prompt the diagnosis,pathological examination is still required for confirmation.CT can accurately describe the internal structures,adjacent relationship and the metastasis of tumors.