Skin, Nevus of Reed [LMP16055]

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Image Details
Diagnostic Modality: 
Whole Slide Image
Disease Category: 
Neoplasia
Diagnosis: 
Nevus of Reed
Species: 
Human
Organ System: 
Skin
Gender: 
Female
Age: 
43 years
Diagnosis Code: 
ICD-10: D22 | ICD-O: 8770/0
Slide Contributor Information
Yoon, J., Ghazarian, D.

Keywords

nevus of Reed, pigmented spindle cell nevus

Clinical History

43-year-old female patient with an abdominal pigmented lesion.

Clinical Discussion

Pigmented spindle-cell nevus (of Reed) is a benign, sudden-onset, and heavily-pigmented skin lesion that clinically resembles melanoma. Generally, these lesions are more commonly seen in younger, female patients, often on the extremities (upper and lower limbs).

Sections show a superficial melanocytic lesion comprised of spindled cells, with heavy deposits of melanin. These nevi are typically predominantly junctional, as seen in this case. The particularly heavy cytoplasmic pigmentation is another eye-catching feature.