See Classification of Pigmented Lesions

See Classification of Pigmented Lesions

…Jadassohn-Tieche) Combined Miescher’s Unna’s Nevus spilus Persistent Special site Yet to be classified Superficial congenital nevus, probable Acquired Clark’s Spitz’s Reeds Yet to be classified Clark-like Spitz-l…

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

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema figuratum

…t chronique) et de quelques eruptiones analogues. Ann Dermatol Syph 1916;6:57–76. Clark WH, Mihm MC, Reed RJ, Ainsworth AM. The lymphocytic infiltrates of the skin. The lymphocytic infiltrates of the skin. Hum Pathol 1974;5:25. Harrison PV. The annul…

Histologic Diagnosis of Inflammatory Skin Diseases

Destombes-Rosai-Dorfman disease

Destombes-Rosai-Dorfman disease Synonyms Rosai-Dorfman disease Rosai-Dorfman histiocytosis Sinus histiocytosis with massive lymphadenopathy Presentation stereotypical Age and sex Usually in males under 25 years of age Distribution of lesions Localiz…

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…