Derm In-Review

Dermal Mass – 10/25
dermal mass Biopsy of this lesion reveals a poorly-defined dermal mass of small blue monomorphic round cells with scant cytoplasm and nuclear molding. Which histologic stain is most helpful in distinguishing this lesion from small cell lung carcinoma? A. CK20 B. TTF-1 C. Chromogranin D. Synaptophysin E. Somatostatin To find out the correct answer and read the explanation, click here. Brou …
dermal mass
Crusted Papules – Friday Pop Quiz 10/11
pathogenesis A 10-year-old male presents with recurrent crops of hypopigmented macules and crusted papules on the trunk and extremities. What is the hypothesized pathogenesis of this disorder? A. CD4+ cell infiltrate B. HHV-6/HHV-7 C. Malassezia D. Deficiency in vitamin A E. Preceding streptococcal pharyngitis To find out the correct answer and read the explanation, click here. Brought to …
pathogenesis
Genodermatosis – Friday Pop Quiz 10/4
Genodermatosis This is a genodermatosis. Which statement is INCORRECT? A. Nikolsky's sign can be positive. B. Has a predilection for neck/ axillae, intertriginous areas. C. The responsible gene is ATP2C1. D. The responsible gene encodes a Ca2+ pump located in the sarcoplasmic reticulum. E. Superinfection with herpes simplex virus can occur in the genital region. To find out the correct answer …
Genodermatosis