Acquired childhood bladder melanosis

Abstract Background Bladder melanosis is rare. It has previously been described only in the fifth decade of life or beyond; it not childhood. Previous descriptions have generally case reports, and so natural history poorly understood. Urinary symptoms present at time cystoscopy frequently attributed to bladder melanosis. A possible suggested aetiology aberrant migration melanocyte during embryogenesis. Case presentation We first a child. He had under our care since age 5 years with urinary incontinence that time, undergone demonstrating normal mucosa. diagnosis idiopathic detrusor overactivity underactive voiding made. After other unsuccessful treatments, intravesical botulinum toxin was proposed. At 13, repeat prior toxin, demonstrated widespread pigmented areas Histology showed Our finding important for several reasons. This reported affect The previous patient would refute explanation congenital condition. Furthermore, development on background stable raises possibility condition may be asymptomatic. Conclusions unique child provided further insight into this rare understood