Case Number : Case 2283 - 14 March 2019 Posted By: Raul Perret

Hamartoma.

Hamartomatous lesion composed of: fat, collagen, smooth muscle, nerves and lymphatic vessel (i think).

I dont have a name for this lesion so im waiting for more comments to learn

The spindle cell lipoma often shows a pseudoangiomatous pattern...in this case you can see branching cavernous spaces, lined by flattened endothelial cells and villiform fibrolipomatous projections. Difficult for me, but I'm thinking of a pseudoangiomatous variant of Spindle Cell Lipoma.

Spindle Cell Lipoma cross my mind but i didn´t know that could look with this pattern, thanks Vincenzo, its a good differential

I called this a vascular malformation (mainly venous) with thrombosis and secondary papillary endothelial hyperplasia. The lesion was mainly located in the hypodermis that is why we see so much fat. The presence of dystrophic blood vessel and nerve bundles within the lesion is a good tip pointing towards a malformative vascular lesion (reference)

On 15/03/2019 at 13:52, Raul Perret said:

I called this a vascular malformation (mainly venous) with thrombosis and secondary papillary endothelial hyperplasia. The lesion was mainly located in the hypodermis that is why we see so much fat. The presence of dystrophic blood vessel and nerve bundles within the lesion is a good tip pointing towards a malformative vascular lesion (reference)

thanks for sharing!