RESUMEN
BACKGROUND: Ichthyosis is a rare skin disorder, in which the shedding of squamous cells is altered. Intravesical ichthyosis is an extremely rare condition. There is evidence for an association with intravesical condylomata accuminata, caused by urogenital infections of the human papilloma virus. These lesions are generally benign but known to be of a carcinogenic potential and therefore should be treated immediately and followed-up closely. CASE PRESENTATION: We present the case of a 39-year-old woman who presented with recurrent urinary tract infections. During cystoscopy diffuse black pigmented flat bladder tumours were visualized. After transurethral resection the pathological report diagnosed an ichthyosis vesicae. CONCLUSION: We recommend a complete resection with frequent clinical and cystoscopic follow-up. Furthermore, testing for the human papilloma virus should be performed and a vaccination should be offered to the patient. As ichthyosis vesicae is a rare phenomenon, there is an evident lack of clinical data regarding therapy, prognosis and follow-up. With our report, we want to emphasize the need for further research.