Abstract
BackgroundUrachal carcinoma is an uncommon neoplasm associated with poor prognosis.Case presentationA 45-year-old man was admitted with complaints of abdominal pain and pollakisuria. A soft mass was palpable under his navel. TC-scan revealed a 11 × 6 cm tumor, which was composed of a cystic lesion arising from the urachus and a solid mass component at the urinary bladder dome. The tumor was removed surgically. Histological examination detected poor-differentiated adenocarcinoma, which had invaded the urinary bladder. The patient has been followed up without recurrence for 6 months.ConclusionThe urachus is the embryological remnant of urogenital sinus and allantois. Involution usually happens before birth and urachus is present as a median umbilical ligament. The pathogenesis of urachal tumours is not fully understood. Surgery is the treatment of choice and role of adjuvant treatment is not clearly understood.
Highlights
Urachal carcinoma is an uncommon neoplasm associated with poor prognosis
The estimated annual incidence of urachal carcinoma in the general population is one in 5 million, or 0.01% of all cancers in adults
Adenocarcinoma is common among urachal carcinomas, whereas squamous cell carcinoma (SCC) is very rare
Summary
The urachus is the embryological remnant of urogenital sinus and allantois. Involution usually happens before birth and urachus is present as a median umbilical ligament. The pathogenesis of urachal tumours is not fully understood. Surgery is the treatment of choice and role of adjuvant treatment is not clearly understood. Written informed consent was obtained from the patient for publication of this case report. A copy of the consent is available with editorial office
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