<div style="page-break-after: always;"><span style="DISPLAY:none"> </span></div> <p> Giant adrenal pseudo cysts are very uncommon lesions which often produce much diagnostic and treatment dilemmas. An adrenal pseudocyst is a fibrous-surrounded cyst within the adrenal gland devoid of a recognizable layer of lining cells. The three most prominent clinical features are: a dull pain in the adrenal area; gastrointestinal symptoms; and a palpable mass. We are presenting a case which preoperatively diagnosed as renal malignancy and per operatively turned out to be a giant pseudo cyst of adrenal gland. Removal of the lesion with partial nephrectomy done and HPR was Giant pseudocyst of adrenal gland. An adrenal pseudocyst is an uncommon clinical finding and is even rarer when it is giant-sized. Surgery is required for symptomatic cases in order to relieve the symptoms and in cases of uncertain diagnosis. Radiological and clinical features of the tumor are nonspecific, thus, histopathological examination is essential in order to establish a definitive diagnosis.</p>