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Transitional cell carcinoma in urachal cyst.

Himanshu C Soni¹, Sapna Marda, Kirti G Goswami

¹Department of Radio-diagnosis, Gujarat Cancer & Research Institute, India. himanshucsoni@yahoo.com

Abdominal Imaging

|September 18, 2009

Summary

A urachal cyst in a 33-year-old male was diagnosed with transitional cell carcinoma. This rare cancer occurred within a cystic remnant of the allantois, presenting as an abdominal mass.

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Area of Science:

Urology
Surgical Oncology
Pathology

Background:

The urachus is a remnant of the allantois, typically obliterated after birth.
Urachal remnants can develop into cysts, which are rare but can undergo malignant transformation.
Transitional cell carcinoma is the most common malignancy arising from urachal remnants.

Observation:

A 33-year-old male presented with a year-long abdominal mass.
CT scan revealed an infraumbilical cystic lesion with a solid enhancing component.
Surgical exploration confirmed a cystic mass separate from the bladder dome.

Findings:

Histopathology definitively diagnosed transitional cell carcinoma within the urachal cyst.
This finding highlights the potential for malignancy in urachal cysts, even in younger patients.
The solid enhancing mass seen on CT correlated with the malignant component.

Implications:

Early diagnosis and surgical management are crucial for urachal carcinoma.
This case underscores the importance of considering urachal pathology in patients with infraumbilical masses.
Further research into the pathogenesis and optimal treatment of urachal transitional cell carcinoma is warranted.