Case Number : Case 2003 - 08 Feb 2018 Posted By: Iskander H. Chaudhry

Spindle cells around vessels

Is this tumour's schema

Should I call it perivascular myoma or myopericytoma?

I thought I saw some rare nests in the epidermis in Fig 8. So I'm thinking of a melanocytic lesion. Don't think it's a neurothekeoma.

Agree that there are some nests in the epidermis, but the cells in the lower dermis are elongated and show whirling pattern. Could be a co-existing melanocytic nevus.

I think it is a spitz nevus. If substantial mitotic figures than atypical spitzoid tumor.

Slightly desmoplastic, Spitz naevus

Spitz naevus. 

Ok. Couldn't diagnose because I haven't seen any. Here in India we hardly biopsy any nevi as melanoma is a rarity

Dear Iskander, could you please provide a feedback or an update on case 1998 posted on first Feb 2018, thanks.

Don't see any mitoses. Also think it' s a Spitz nevus.

Dr Chaudhry: 

Yes final diagnosis was a Spindle cell Naevus with Spitzoid features. 

Beautiful case. My thought was spitz too

Yes agree with Spitz. Do you think this pattern would be ALK related? Or would be desmoplastic like Dr Carr suggested ? just curious. 

Dear Mani, Nice question. I'd say it could be ALK case but I'll see if Arnaud de la Fouchardiere might take a look and comment.