Introduction: In this study we evaluate the influence of longitudinal and transverse length of prostate size measured on the magnetic resonance imaging (MRI) scan on the overall outcomes of HoLEP. Material and methods: The patients were divided into two groups based on the shape of the prostate. Group 1 had a longitudinal shape with a longitudinal diameter greater than the transverse diameter, whereas group 2 had an oval shape with a transverse diameter greater than the longitudinal diameter. The pre-operative, peri-operative and the one-month post-operative data along with the urinary parameters were then evaluated. Results: The two groups were comparable with regard to their pre-operative values. While the median lobe enucleation time and morcellation time showed no difference, group 1 showed a significantly shorter (p < 0.01) operative time for lateral lobe enucleation, lower laser energy usage and better enucleation efficiency. However, there was no difference in the median lobe enucleation time, morcellation time, haemoglobin drop, duration of urethral catheterization and hospital stay. The groups were also comparable with regard to the improvement in urinary parameters and complications. Conclusion: Prostate shape plays a significant role in the surgical treatment of BPH.