Pagetoid

Pagetoid is a term used in dermatology to refer to "upward spreading" of abnormal cells in the epidermis (ie from bottom to top). It is uncommon and a possible indication of a precancerous or cancerous condition. Cells display pagetoid growth when they invade the upper epidermis from below. Squamous cell carcinoma, melanoma in situ, Pagetoid Bowen disease and other carcinomas can all display pagetoid growth.

The term Pagetoid (Paget-like) is derived from the Extramammary Paget's disease, wherein the large tumour cells are arranged singly or in small clusters within the epidermis and its appendages. These cells are distinguished by a clear halo from the surrounding epithelial cells and a finely granular cytoplasm.[1] This proliferation of cells in the epidermis is responsible for the 'buckshot scatter' pattern.[2] This is a typical feature of superficial spreading type of Malignant Melanoma.

References

  1. ↑ Kumar V, Abbas AK, Fausto N. Robbins and Cotran's Pathologic Basis of Disease.Elsevier.1069
  2. ↑ http://www.dermnetnz.org/pathology/pathology-glossary.html
This article is issued from Wikipedia - version of the 5/10/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.