S010: Clinicopathologic Self-Assessment

In this session led by Elena Bridges, Director of Dermatopathology at the Zucker School of Medicine, the significance of clinical-pathologic correlation in dermatopathology is emphasized through various case studies. The discussion highlights how accurate diagnoses rely on the interplay between clinical presentations and histopathological findings. Dr. Dirk Elston shares a case of a patient with Lambda restricted follicular lymphoma, illustrating the importance of examining deeper vessels in retiform purpura to justify a diagnosis of type 1 cryoglobulinemia rather than common misconceptions like Henoch-Schönlein purpura. The dialogue covers the nuances of cryoglobulin testing, indicating that temperature control plays a significant role in avoiding false results. Another case reveals the histological indicators for pemphigus vulgaris and vegetans, detailing the need for immunohistochemical techniques to uncover subtle presentations. The necessity to monitor antibody presence during treatment is cautioned, citing a severe case of esophagitis desiccans due to the premature withdrawal of therapy. The final sections emphasize the importance of diagnostic mnemonics and comprehensive understanding of various dermatological conditions, ultimately underscoring the interdependent nature of clinical and histopathologic observations in dermatology.