Urachal mucinous cystic tumour of low malignant potential (MCTLMP) is a very rare cystic epithelial neoplasm of urachal origin, with fewer than 50 cases described as such in the English-language scientific literature. This case report describes an instance of urachal MCTLMP discovered incidentally in a 59-year-old female patient following the performance of imaging studies for an unrelated condition. Management consisted of surgical resection of the tumour and partial cystectomy, with no complications and no recurrence after three months of follow-up. Sections of the partial cystectomy specimen demonstrated histological features that were reminiscent of a low-grade appendiceal neoplasm of a borderline ovarian mucinous neoplasm and favoured to represent urachal MCTLMP. An ongoing longitudinal study is required to better understand the long-term behaviour and clinical course of urachal MCTLMP.
Miller et al. (Sun,) studied this question.