Emphysematous cystitis presenting as painless gross hematuria.
[ncbi.nlm.nih.gov]
[…] interstitial cystitis (IC), such as voiding frequency, urgency with urge incontinence, dysuria, nocturia, burning sensation during urination, post urination pain, painful hematuria
[ncbi.nlm.nih.gov]
Definition / general Clinical syndrome of gross hematuria, often with irritative bladder symptoms Clinical features Irritative voiding symptoms, gross hematuria Treatment
[pathologyoutlines.com]