Dermatopathology Case Challenge: Recognizing Mimics and Masqueraders

In a dermatopathology presentation, the speaker discusses three cases emphasizing the importance of recognizing atypical presentations in dermatological conditions. Initially, they present a case involving a teenager with unresponsive vulvar plaques, later diagnosed as hypertrophic lichen sclerosus, emphasizing its histological similarities to secondary syphilis. The speaker highlights relevant literature regarding this condition to validate its existence and treatment impact, noting a successful clinical outcome with JAK inhibitor therapy. The second case explores a woman with a history of ovarian carcinoma who develops a papular rash, later identified as cutaneous metastasis, underscoring the need for accurate diagnoses to guide appropriate palliative care. The final case examines a patient presenting with a lycanthoid infiltrate, initially misdiagnosed until further investigation revealed adult T-cell leukemia lymphoma due to frequent Caribbean exposure. Throughout the discussion, the speaker stresses maintaining a high index of suspicion and considering the patient's clinical history when interpreting dermatopathology. They conclude with key takeaways about the necessity of thorough biopsies and the potential for outdoor dermatological shifts due to climate changes.