الفهرس 
INTRODUCTION AND AIM OF THE WORKOnly 14 pages are availabe for public view
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Abstract
This clinical study included 104 patients with 110 renal units
containing stones, all patients with renal calculi who were treated by
percutaneous nephrolithotomy in the period from January 2015 to
August 2016 were included in the study.
Spiral CT was used for pre-operative evaluation and planning the
puncture by estimating six informations from the spiral CT. The preoperative
informations estimated from the spiral CT are compared
with the intra-operative findings.
The approach used (sub-costal or supra-costal) was as planned in 89
cases and the approach was not as planned in 21 cases, with
sensitivity of 80 %. The calyx punctured was as planned in 75 cases
and was not as planned in 35 cases, with sensitivity of 68 %. The
number of punctures was as planned in 82 cases and was not as
planned in 28 cases, with sensitivity of 74.5%. The stone-free status
was as planned in 80 cases and was not as planned in 30 cases with
sensitivity of 72.7%. Hepatomegaly was identified in 2 cases with
sensitivity of 100%. No cases of retro-renal colon was diagnosed with
sensitivity of 100%.
Second look PCNL was done in 10 patients (9.9 %) to clear residual
stones and to achieve stone-free status. The post-operative hospital
stay ranged from 1 day to 17 days with mean of 3.23 ± 2.486.
Stone-free status was achieved in 60 patients (54.5 %), 20 patients
(18.1%) were discharged with insignificant residual stones (<4mm),
while 30 patients (27.4 %) had significant residual stones. with overall
stone-free rate of 72.6 %.