Case Number : Case 1905 - 15 Sept - Dr Richard Carr Posted By: Guest

Beautiful Nerve sheath myxoma with classic lobular architecture and multiple ring-like structures

There are two acral neoplasms with pseudolipoblasts cells: Acral Myxoinflammatory Fibroblastic Sarcoma(alias Inflammatory Myxohyaline Tumor of Distal Extremities) and Nerve Sheath Myxoma(the lipoblasts-like cells are occasionally abundant).

The first has got a conspicuous inflammatory component and many hyalinized or ganglion-like cells often Sternberg-like, totally absent in this case. So totally agree with Raul!

Very great case.

yes, lovely nerve sheath myxoma.

Nice case! Agree with nerve sheath myxoma.

Agree, nerve sheath myxoma

Yes, lovely nerve sheath myxoma.

Perineurial myxome ou neurothekeome

Yes this is a (dermal) nerve sheath myxoma. Nicely diffusely S100 positive (not shown). Anatomic location is typical. I think they must be quite rare as I had not seen a "hot" case for many years almost to the point of forgetting what they look like. I was very struck by the ring-like structures in this case which are illustrated in some texts.