Large bizarre nuclei with cherry-red nucleoli .Options are broad and include melanoma / carcinoma (e.g sebaceous or metastatic )  / sarcoma (e.g angiosarcoma or leiomyosarcoma or  eptheloid or undifferentiated  ) / Chordoma / and Lymphoma (e.g Anaplastic large cell  or diffuse large B-cell leg type).

My gut feeling is for extra- axial chordoma.

For IHC tests.

Deep cutaneous tumor (maybe soft parts extending to skin) with atypical virocyte-cells, inflammatory background plus focal myxoid stroma (last picture). My hypothesis is Myxoinflammatory fibroblastic sarcoma.

First image is diagnostic for me: Fibrous Histiocytoma(DF), atypical variant. 

1 hour ago, vincenzo said:

First image is diagnostic for me: Fibrous Histiocytoma(DF), atypical variant. 

Agree. Epidermal reaction, preserved adnexa and keloidal collagen.  

dermatofibroma with pleomorphism and monster cells

Myxoinflammatory fibroblastic sarcoma. CD34 was positive.

Dear  respected madam, do we need fusion transcript studies to confirm the diagnosis or we relay on CD 34

as there is variable positivity for  CD68, CD34, c-kit,SMA,keratin, desmin, EGFR in these tumors

please let me know

since CD 34 is positive it has excluded fibrous histiocytoma with atypical cells

also must we do S 100. Prof Fletcher discusses Cd34 and  s 100 positive tumors which have fusion genes

The histologic spectrum of soft tissue spindle cell tumors with NTRK3 gene rearrangements.

Dear friends and brothers. I Do agree with atypical FH since there is an epidermal reaction. May be with hyperpigmentation. Green zone , lateral entrapement of collagen. CD34 Is not enough . Can be positf and week in FH

I would also consider Pleomorphic Hyalinising Angiectatic Tumour of soft parts here

what is the answer