Pituitary Abscess: A Challenging Preoperative Diagnosis-A Multicenter Study.

Area of Science:

• Neurology
• Endocrinology
• Infectious Diseases

Background:

• Pituitary abscess (PA) is a rare condition (<1% of pituitary lesions) involving infected pus in the sella turcica.
• PAs can be primary (normal pituitary) or secondary (pre-existing sellar pathology), with diagnosis often delayed due to non-specific symptoms and imaging.
• Current treatment involves surgical drainage and antibiotics, but preoperative diagnosis remains a significant challenge.

Purpose of the Study:

• To identify key clinical and imaging features of primary pituitary abscesses to facilitate earlier diagnosis and management.
• To evaluate the outcomes of treatment for primary pituitary abscesses.

Main Methods:

• A retrospective, multicenter study analyzed data from 84 patients with primary pituitary abscesses over a 20-year period.
• Data collection focused on clinical presentations, diagnostic methods, and treatment outcomes.

Main Results:

• The most common symptoms were asthenia (75%), visual impairment (71%), and headache (50%).
• Diagnosis was confirmed peri- or postoperatively in 95% of cases.
• While visual and headache symptoms often improved, pituitary function recovery was poor (23%), with preoperative diagnosis being a protective factor.

Conclusions:

• Early diagnosis and treatment of pituitary abscesses are critical due to the high incidence of pituitary dysfunction.
• Current diagnostic methods lack standardization for conclusive preoperative diagnosis.
• Emerging nuclear imaging techniques show promise for improving preoperative diagnosis and warrant further investigation.