Confluent & reticulated papillomatosis

    Clinical Features:

    • Presents around adolescence
    • More common in blacks, with a female predominance
    • Presents with small papules on the chest, back and upper arms
    • The papules enlarge and eventually become confuent and reticulated.

    Histologic Features:

    • The epidermis shows papillomatosis with hyperparakeratosis and often acanthosis.
    • Downgrowths of the epidermis between the rete ridges
    • Mild increase or sometimes decrease in basal layer pigmentation
    • Dermal vascular dilatation with a mild perivascular lymphohistiocytic infiltrate
    • There is sometimes fragmentation of upper dermal elastic fibers and mild papillary dermal edema.

    Cases associated with this book:

  • Confluent and reticulated papillomatosis
    Author: Stephen Lyle, M.D., Ph.D.

    Conference: Teaching Collection