Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

…n: Textbook of Dermatology. 5th ed. Oxford, England: Blackwell Scientific Publications, 1992:1538. “On the skin, three types of benign blue nevi are recognized: the common blue nevus, the cellular blue nevus, and the combined nevus. In additio…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology


Strictly speaking, the term nevus denotes any congenital lesion of skin. Nevocellular nevus, however, refers to any congenital or acquired neoplasm of melanocytes.” Murphy GF, Mihm MC. The skin. In: Pathologic Basis of Disease. 6th ed…

Dermatology Practical & Conceptual

Blue nevus with a starburst pattern on dermoscopy

…ent with a blue-gray papule approximately 4 mm in diameter. We suspected that it was a blue nevus or a pigmented Reed/Spitz nevus. On dermoscopic observation, the lesion showed homogeneous black-bluish pigmentation. This dermoscopic feature was sugge…

Dermatology Practical & Conceptual

The so-called dysplastic nevus is not dysplastic at all

…orically, histologically, clinically and molecularly, that the so-called dysplastic nevus is a type of melanocytic nevus and should be managed like other types of melanocytic nevi [1,2]. This reinforces the notion set forth by the late Bernie Ackerma…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Normal, Typical, Ordinary, Banal, and Common Nevus?

…(.25 inches) in diameter. Any mole that grows larger than that size may be cancerous.” Accessed November 29, 2006. “When a typical common nevus is seen under the microscope (one hopes

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Junctional Activity and Active Junctional Nevus?

…onal activity ceases and the lesion is composed only of dermal nevus cells (intradermal nevus).” Weedon D. Lentigines, nevi, and melanomas. In: Skin Pathology. 2nd ed. New York, NY: Churchill-Livingstone, 2002:806. “Intradermal nevi sho…

Differential Diagnosis in Dermatopathology

Verrucous seborrheic keratosis vs. Verrucous epidermal nevus

A malignant neoplasm of melanocytes that, in the skin, begins as a macule and may become a patch or a papule. A flat lesion of melanoma tends to be asymmetrical, poorly circumscribed with a scalloped, jagged, or notched border, and variegate, mostly…