Sacral cysts with exophytic components. A report of two cases

Area of Science:

• Spine surgery
• Orthopedic oncology
• Radiology

Background:

• Sacral cysts are uncommon pathologies.
• Differential diagnosis of sacral lesions is crucial for appropriate management.
• Understanding the imaging characteristics of rare sacral cysts aids in diagnosis.

Observation:

• Two cases of sacral cysts were analyzed: an aneurysmal bone cyst and a simple cyst.
• The simple cyst represents the first reported instance of this type of lesion in the sacrum.
• Both cysts were asymptomatic and presented with similar radiographic appearances.

Findings:

• Both sacral cysts exhibited significant exophytic components, growing outwards from the bone.
• Radiographic evaluation revealed comparable appearances between the aneurysmal bone cyst and the simple cyst.
• The asymptomatic nature of both lesions suggests a slow-growing or non-aggressive process.

Implications:

• This report expands the understanding of rare sacral cyst presentations.
• The similar radiographic features highlight the importance of considering both aneurysmal bone cysts and simple cysts in the sacrum.
• Further research may elucidate the specific etiologies and optimal management strategies for these rare sacral lesions.