SUS 2 - Routine histological examination of haemorrhoidal tissue – an unnecessary environmental and economic expense?

Abstract Background Modern, less invasive methods of haemorrhoid treatment, such as haemorrhoid artery ligation and radiofrequency ablation, are increasingly employed. These do not yield specimens for histological analysis. However, when open haemorrhoidectomy is performed, even in the absence of suspicious operative features and in low-risk patients, the haemorrhoid specimen is routinely sent. This has both environmental and financial costs in an increasingly pressured NHS, and negatively impacts sustainability with no clinical advantage. Methods We retrospectively studied 112 open haemorrhoidectomies performed at our UK hospital from February 2018 to June 2023, reviewing clinic letters, operation notes and post-operative histology. Aims To assess the frequency of incidental pathology identified during routine histological assessment, and the associated financial costs and carbon footprint generated. Results 112 open haemorrhoidectomies were performed in the 5-year study period. In total, two patients with risk factors for AIN/Anal cancer were identified. There were no documented concerns of abnormal intra-operative findings. Histology mainly revealed haemorrhoid tissue alone (103) and benign polyps (8). AIN3 was detected in one of the high-risk patients. The cost per histology specimen was £93.32 (Total cost £10,451.84). Each specimen is estimated to generate 0.29kg of Carbon Dioxide equivalents (Total 32.48kg CO2e). Conclusion Routine histological assessment of haemorrhoidectomy specimens is time-consuming, expensive and has an avoidable carbon footprint for a low detection of incidental pathology. Our study suggests that histology should be reserved for patients with risk factors for AIN/Anal cancer, or concerning intra-operative findings. Larger scale studies, and development of national guidelines would aid clinician decision-making.