PMC3649608_01
(a) USG showing perirenal hypoechoic collection. (b) CECT - Renal parenchymal enhancement with perirenal and renal sinus hypodense nonenhancing collection. (c) MRI T2W coronal section showing bilateral perirenal hyperintense collection with septae
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F1
Ultrasonogram (USG) showed bilateral perirenal collection with septations and the collection was seen to extend into the renal sinuses [Figure 1a]. Computed tomography (CT) scan of abdomen showed bilateral perirenal hypodense multiloculated collection, with density varying between 8 and 12 HU [Figure 1b]. Magnetic resonance imaging (MRI) showed a perirenal hyperintense collection in T2W images and also in the renal sinus [Figure 1c].
(a) Perirenal multicystic lesion dissected. (b) Lap deroofing in progress. (c) Postoperative CT scan (delayed film)
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F2
She underwent laparoscopic deroofing and marsupialization of the perirenal collection on either side [Figure 2a and b]. The patient made a complete recovery and is on regular follow-up for the past 18 months [Figure 2c].