It has come to our attention that a letter has been published  following publication of our article, Lower Urinary Tract Mesh Perforations Following the Insertion of Mid-urethral Tapes or Transvaginal Mesh: A Tertiary Unit's Experience - Saidan, et al. 2019 , by one of our colleagues, and we would be grateful for an opportunity to reply.
Our published paper  relates to a small retrospective case-series of women undergoing surgery for management of their urinary tract mesh perforation only. It therefore has its limitations, which we have acknowledged in our paper. We are grateful to the Editor, and the scientific team who reviewed our paper as part of the peer-reviewed process, for considering it worthy of publication despite these.
We thank Dr. Agur  for his helpful suggestions, which we will take into consideration for any future publications of our work. Many of the questions he raises however do not relate to this case series and are outside the remit of this paper. We can however clarify the following points that do relate to this case series.
The 8 patients highlighted by Dr. Agur presented with symptoms to their local medical teams within 8-weeks of mesh insertion (Table 1). This was not when they were referred to or seen in our tertiary unit, or had their surgery.
Table 1: Time from implant insertion to onset of symptoms. View Table 1
We have acknowledged in the paper that some of our patients who underwent excision of mesh to manage their perforation were subsequently found to have some residual some mesh fibres in the bladder. These were treated cystoscopically with symptom resolution. We have already commented on our learning curve as a unit in the discussion, with some of our historic cases being included in this case series. It is important that clinicians learn from these early experiences of clinicians performing this work.
We are also of the opinion, as Dr. Agur states in his letter, that it is likely that presentations within 12 months of mesh placement are potentially missed intraoperative injuries. We have stated so in our discussion.
We welcome the recent publications by the American Urogynecologic Society and the International Urogynecological Association International . It provides guidance to subspecialists in Female Pelvic Medicine and Re-constructive Surgery (FPMRS) on assessment, investigation and management of women presenting with potential mesh complications, and also their efforts to categorize these surgical procedures and their nomenclature.
In line with national UK guidelines, we continue to upload our mesh- removal data onto the British Society of Urogynaecology database .
We are glad our paper has generated debate and interest. We encourage other FPMRS Sub-specialists to share their experiences. It is important that we all continue to learn from others in this emerging field.