Molecular Developments in Parasellar Tumors and Potential Therapeutic Implications

Area of Science:

• Neuro-oncology
• Endocrinology
• Molecular pathology

Background:

• The parasellar region is anatomically critical, housing vital structures and serving as a common origin for diverse tumors like meningiomas, gliomas, and craniopharyngiomas.
• Systemic and inflammatory disorders can also impact this region, primarily affecting the pituitary gland.
• Tumor classification is guided by the World Health Organization CNS5 2021 guidelines, reflecting varying pathological characteristics and malignant potential.

Purpose of the Study:

• To provide a comprehensive review of current advancements in the histopathology and molecular biology of parasellar lesions.
• To highlight the diagnostic and therapeutic challenges posed by these tumors.
• To emphasize the role of molecular techniques in understanding pathophysiology and guiding clinical management.

Main Methods:

• Review of current literature on parasellar lesions.
• Analysis of histopathological features and molecular alterations.
• Discussion of diagnostic, prognostic, and therapeutic strategies.

Main Results:

• Parasellar lesions exhibit diverse origins and pathologies, with classification evolving based on molecular insights.
• Mutational signature analysis reveals specific gene mutations and signaling pathway aberrations, crucial for understanding disease mechanisms.
• Nonspecific signs and symptoms often relate to mass effect or endocrine dysfunction, with most lesions lacking secretory activity.

Conclusions:

• Molecular techniques offer powerful tools for diagnosing, predicting prognosis, and treating parasellar lesions.
• Multidisciplinary team approaches are essential for effective management, including surgery, radiotherapy, chemotherapy, and medical therapies.
• Addressing pituitary hormonal deficiencies is a critical component of comprehensive treatment for parasellar lesions.