Top 25 Pearls of Pulmonary Pathology Series. Max and Kevin use a case of a high grade rhabdoid tumor to discuss how they approach this type of specimen. SMARC A4 deficient neoplasms and NUT carcinomas are discussed. Topic 5 Pear 2: Some neoplasms are unclassifiable (but you have to think about others to diagnose them, NUT, SMARC A4 Deficient). Visit www.6patterns.org for more. Twitter and Instagram @6Patterns. Videos are for education and entertainment only and should not be used as medical advice.