Rathke's Cleft Cyst Abscess with a Very Unusual Course

Area of Science:

• Neuroendocrinology
• Neurosurgery
• Infectious Diseases

Background:

• Rathke's cleft cysts (RCC) are congenital remnants of the Rathke's pouch, typically located in the pituitary region.
• Infected RCCs are exceptionally rare, with limited documented cases in medical literature.
• Intracranial extension of abscesses from pituitary region lesions is uncommon.

Observation:

• A 31-year-old male presented with headaches, visual disturbances, and hypopituitarism.
• MRI revealed ring-enhancing cystic lesions with suprasellar and intraparenchymal extension, mimicking a high-grade glioma.
• Endoscopic transsphenoidal biopsy identified Staphylococcus aureus in the pituitary fossa, confirming an infected RCC with abscess extension.

Findings:

• The patient was diagnosed with an infected Rathke's cleft cyst with significant intracranial spread.
• Treatment involved a prolonged course of intravenous antibiotics.
• Resolution of the infection led to improvement in the patient's visual symptoms and overall condition.

Implications:

• This case underscores the importance of considering infectious etiologies, such as infected RCC, in the differential diagnosis of sellar/suprasellar masses, even with atypical imaging findings.
• Prompt diagnosis and appropriate antibiotic therapy are crucial for managing infected RCCs and preventing complications.
• The unique intracranial extension of the abscess highlights the potential morbidity associated with this rare condition.