Thank you for additional immunochemical data of case 165. It is convincing as to the tumor being Kaposi sarcoma. Now I understood that nodular KS could be well circumscribed like a benign tumor. I wish you to show us if you have more dada concerning the lymphatic markers such as VEGFR-3/D2-40 or LNA-1 protein of HHV8 in this tumor.
The case 166 appears to be neural fibrolipoma. The small cellular areas seem to be nerve fibers surrounded by hamartomatous proliferation of mixed adipose and collagenous tissues. The location of this lesion is in interest.

The architecture shows the possibility of fibrolipoma, but some neural tissure was noted. So the tentative impression should be neural fibrolipoma or the alternative term of fibrolipomatous hamartomas of nerve. I appreciate Black Jack's answer. The biopsy location should be extremity which is the most common location of this entity. If we encounter the impression, the clinical mainfestations should be considerated the following conditions includes Klippel-Trenaunay-Weber syndrome, neurofibromatosis, Milroy disease, and Proteus syndrome.

Sorry, I want to make this answer easier...Morphea,due to the scaning view implies a rigid profile of the specimen, and the following pictures show the squeezing of adnexal structures. As to neural fibrolipoma, I can also provide some references:
1.http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=3970300&dopt=Citation
2.http://www.histopathology-india.com/PC65.htm