E2128. Resident’s Primer on Posterior Cranial Fossa Lesions in Adults: Not Your Usual Suspects
  1. Jiewen Li; University of Cincinnati Medical Center
  2. Lily Wang; University of Cincinnati Medical Center
  3. Mary Gaskill-Shipley; University of Cincinnati Medical Center
Posterior cranial fossa lesions account for a significant portion of intracranial abnormalities found in the adult population with a variety of diagnoses. Not all mass-like lesions in the posterior fossa are tumors. Neoplastic, developmental, and vascular lesions can occur. Imaging is often the first line approach to evaluation of a posterior cranial fossa lesion. However, image findings of many posterior cranial fossa abnormalities overlap and may mimic one another. Therefore, it is important to recognize the image findings of nonneoplastic lesions and benign versus malignant tumors to guide the appropriate clinical course. This exhibit will focus on distinguishing imaging findings to aide in making the correct diagnosis and avoid pitfalls.

Educational Goals / Teaching Points
To review the imaging features of posterior cranial fossa lesions in the adult population and how to differentiate them.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Posterior cranial fossa lesion etiology and imaging findings

The management of posterior fossa lesions depends on the correct diagnosis. The radiologist plays a vital role on the multidisciplinary team and can have a significant impact on patients’ lives. This resident’s primer will focus on the differentiating features of posterior cranial fossa lesions in adults.