Differential Diagnosis in Dermatopathology

Verrucous seborrheic keratosis vs. Verrucous epidermal nevus

…lat lesion of 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 deve…

Differential Diagnosis in Dermatopathology

Discussions

…pseudocysts” almost invariably, whereas verrucae vulgares do not. The term “epidermal nevus” is as non-specific as “melanocytic nevus.” Melanocytic nevi may be acquired, such as those of Clark, Spitz, and Reed, or be con…

Differential Diagnosis in Dermatopathology

Lymphomatoid papulosis vs. Mycosis fungoides, plaque

…lat lesion of 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 deve…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema figuratum

…(érythème papulo-circiné migrateur et 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 Path…

Histologic Diagnosis of Inflammatory Skin Diseases

Borreliosis (erythema migrans)

…uantitative detection of Borrelia burgdorferi in 2-millimeter skin samples of erythema migrans lesions: correlation of results with clinical and laboratory findings. J Clin Microbiol 2002;40:1249-53. Melski JW, Reed KD, Mitchell PD, Barth GD. Primary…