(0 votes)
 Author(s): Luc Thomas, Amélie Boespflug
Description This page has not yet been summarized.
Author(s) Luc Thomas · Amélie Boespflug
Responsible author Luc Thomas→ send e-mail
Status unknown
Status update June 25, 2018
Status by Ralph P. Braun

Bowen disease, also known as in situ squamous cell carcinoma[1], can affect the nail and the periungual skin or both, and in rare cases it is polydactylic. Nail involvement can reveal a white-to-yellow longitudinal discoloration of the nail plate but pigmented cases are not uncommon. In the latter case, pigmentation is often grayish rather than brown or black.

Pigmented squamous cell carcinoma.JPG.jpg Per op SCC.JPG.jpg

Other features of epithelial tumors of the matrix may be observed and include band-disposed splinter hemorrhages, polychromia and subungual localized hyperkeratosis.

463e.JPG.jpg 463k.JPG.jpg

Periungual involvement reproduces the dermoscopic features observed in cutaneous Bowen disease: the presence of irregular desquamation, glomerular (round-shaped at classic × 10 or × 20 dermoscopic magnification but exhibiting a tridimensional pattern resembling the glomerulus apparatus of the kidney at higher magnification) vessels grouped in bunches and dust-like gray pigmentation[2].

Invasive squamous cell carcinoma exhibits quite similar but more prominent features[3] with more common bleeding, thicker localized subungual hyperkeratosis and polychromia. In some cases, the lesion is painful and the pain can be triggered by the pressure induced by the dermoscope.

2062b.JPG.jpg 2062l.JPG.jpg

  1. Dalle S, Depape L, Phan A, Balme B, Ronger-Savlé S, Thomas L. (2007) Squamous cell carcinoma of the nail apparatus: clinicopathological study of 35 cases. Br J Dermatol 156(5): 871–4.
  2. Zalaudek I, Argenziano G, Leinweber B et al. (2004) Dermoscopy of Bowen’s disease. Br J Dermatol 150(6): 1112–16.
  3. Cogrel O, Beylot-Barry M, Doutre MS. (2008) Subungual squamous cell carcinoma revealed by longitudinal erythronychia. Ann Dermatol Venereol 135(12): 883–5.
Cookies help us deliver our services. By using our services, you agree to our use of cookies.