Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Figurate Erythemas?

SL, Hurley HJ, eds. Dermatology. 3rd ed. Philadelphia, PA: WB Saunders Co., 1992:577, 579. “Erythema gyratum repens is a rare, clinically specific, and distinctive paraneoplastic syndrome.” Eubanks LE, McBurney E, Reed R. Erythema gy…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…m nuclei 8. Lymphocytes with cerebriform nuclei common 9. No Reed-Sternberg-like cells 9. Reed-Sternberg-like cells sometimes 10. No plasma cells usually 10. Plasma cells often 11. No neutrophils (except for flea “bites”) 11. Neutro…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Overlap Syndromes?

…these two diseases may overlap.” Romero RW, Nesbitt LT, Reed RJ. Unusual variants of lupus erythematosus or lichen planus. Arch Dermatol 1977;113:741–48. “The overlap syndrome, lichen planus/lupus erythematosus, refers to a heterogenous

Differential Diagnosis in Dermatopathology

Verrucous seborrheic keratosis vs. Verrucous epidermal nevus

…melanoma tends to be asymmetrical, poorly circumscribed with a scalloped, jagged, or notched border, and variegate, mostly shades of brown. A patch may become a plaque or upon it may develop a papule, nodule, or tumor. A papule may develop into a nod…