Case Number : Case 1496- 18 March Posted By: Guest

Epidermal keratinization...follicular growth pattern...i go with Infundibulocystic SCC.

This one is hard. I think this is verrucous SCC because the lesion seems way too endophytic (surpasses the eccrine glands level seen on first page) and there seem to be some neutrophils with focal microabscess formation (Curiously Weedon states that is an important clue to verrucous SCC). Appart from that, to my eyes this lesion does not have the architecture for a KA. Lastly, the clinical history is of course consistent with KA.

By the way, how much time is 5/52 ago? (5-52 days ago?). Thanks in advance

SCC.

thanks mona

I called this KA en plaque also known as "follicular KA".

Mentioned in Weedon text-book 2010, in an excellent review by Santa Cruz 2008 and by Kossard in 2007 (cited by Weedon).  I think it is one of the most frequently missed KA variants and once you come to recognise it I am sure you will diagnose it occasionally.  It is an uncommon variant that often lacks the central crater and involves distinct follicular units.  I don't think there are really any clinico-pathological features here to warrant consideration of SCC.  I appreciate that many regard KA as an SCC variant.