Clinical features and management of Chinese anti-neutrophil cytoplasmic antibody-associated vasculitis patients with spontaneous renal hemorrhage: a single-center report and systematic review.

This is the first summary of clinical features and treatments of SRH in AAV. Patients with AAV in early stage and with high disease activity appeared to be more likely to develop SRH. Key Points • This is the first summary of clinical features and treatments of SRH in AAV. • SRH more likely occurs in AAV patients in the early stage (≤ 3 months) and with high disease activity. • Clinicians should be aware of the possibility of SRH when AAV patients complain of back or abdominal pain.