What are your preferred IHC stain(s) for desmoplastic melanoma?

Desmoplastic melanoma (DM) often comprises variably atypical spindle cells in the dermis within a collagenous stroma and surrounding solar elastosis. By histology, DM can mimic benign processes such as scar or neurofibroma, in addition to other malignancies such as sarcomatoid carcinoma, atypical fibroxanthoma (AFX), or malignant peripheral nerve sheath tumor (MPNST). Useful characteristic histologic features (e.g., overlying melanoma in situ, lymphoid aggregates, etc) are often missing in a hig...