Spontaneous involution of a Rathke's cleft cyst

Area of Science:

• Neurology
• Radiology
• Developmental Biology

Background:

• Rathke cleft cysts (RCCs) are benign sellar/suprasellar cysts originating from Rathke's pouch remnants.
• Typically asymptomatic and discovered incidentally, large RCCs can cause headaches, visual deficits, or hormonal dysfunction.
• Spontaneous regression of RCCs is exceptionally rare, with most cysts remaining stable or enlarging.

Purpose of the Study:

• To report a rare case of incidentally detected Rathke cleft cyst exhibiting spontaneous regression.
• To explore the radiological characteristics, natural history, and potential mechanisms of spontaneous RCC resolution.

Main Methods:

• Case presentation of a quadragenarian male with an incidentally detected sellar/suprasellar cyst.
• Serial magnetic resonance imaging (MRI) over a 3-year follow-up period to monitor cyst changes.
• Review of literature regarding RCC natural history, radiological findings, and spontaneous involution.

Main Results:

• An incidentally detected Rathke cleft cyst demonstrated significant spontaneous regression over 3 years of MRI follow-up.
• The patient remained asymptomatic throughout the observation period.
• Radiological features consistent with spontaneous involution were noted on serial imaging.

Conclusions:

• Spontaneous regression of Rathke cleft cysts, though uncommon, can occur.
• This case highlights the variable natural history of RCCs and the importance of follow-up imaging.
• Further research into the mechanisms underlying spontaneous RCC resolution is warranted.