Surveillance
Of the 57 patients, 36/57 (63%) had no follow-up visits with PHO. All nine of the patients who saw PHO prior to diagnosis had at least one follow-up visit with a PHO provider. Duration of follow-up with PHO ranged from one week after the biopsy to 5 years, which includes patients with concurrent NLPHL who continue to be followed by our survivorship program at time of writing. Most commonly, the 21 patients who had PHO follow-up were seen for one visit prior to discharge from PHO clinic.