Collision of desmoplastic-neurotropic melanoma and squamous cell carcinoma on the lip.

@article{Falanga2008CollisionOD,
  title={Collision of desmoplastic-neurotropic melanoma and squamous cell carcinoma on the lip.},
  author={Vincent J Falanga and Molly Chartier and Janet R. Butmarc and Lance M. Tibbetts},
  journal={Journal of cutaneous pathology},
  year={2008},
  volume={35 5},
  pages={473-6}
}
We report on a case of the collision of a desmoplastic-neurotropic melanoma and a squamous cell carcinoma on the lip. A 46-year-old male developed a multifocal infiltrative squamous cell carcinoma of the lower lip, which also showed sparse melanocyte atypia within the epidermis and an extensive spindle cell proliferation within the dermis, subcutaneous tissues and nerves. An immunohistochemical panel showed that the spindle cells were melanocytes, not derived from the squamous cell carcinoma… CONTINUE READING