Retrorectal cystic hamartoma: a problematic 'tail'

Area of Science:

• Surgical pathology
• Developmental abnormalities
• Retrorectal lesions

Background:

• The retrorectal space is an infrequent site for neoplastic masses.
• Tailgut cysts (TGCs), or retrorectal hamartomas, are rare developmental cystic lesions.
• These lesions predominantly affect middle-aged females.

Observation:

• A 16-year-old female presented with lower abdominal pain and constipation.
• A perirectal examination revealed an extraluminal mass posterior to the rectum.
• Radiological imaging suggested a mature cystic teratoma.

Findings:

• Histopathological examination confirmed the mass as a tailgut cyst (TGC).
• This case highlights TGC as a differential diagnosis for retrorectal cystic lesions.
• The patient underwent successful exploratory laparotomy and en bloc cyst excision.

Implications:

• Tailgut cysts require complete excision due to the potential for malignant transformation.
• This case underscores the importance of considering TGC in the differential diagnosis of retrorectal masses, even in younger patients.
• Early diagnosis and surgical management are crucial for favorable outcomes.