This is a cat that had severe uveitis with secondary glaucoma. The eye was
removed and submitted for histopathology . The results were compatible with
ocular chondrosarcoma. Ocular sarcomas in cats are a common result of chronic uveitis,  and a previous trauma/eye surgery , even years before presentation.
This cat was presented to me after his owner noticed extensive bruising all over his abdomen.  After ruling out bleeding disorders a biopsy was taken and revealed lymphangiosarcoma. Lymphangiosarcoma is not common, and if caught early enough can be excized. This case was non-operable, and the cat had 3 chemotherapy treatments which have shrunk the tumor to an operable size. The tumor was removed succesfully but during the recovery period the cat developed a severe MRSA infection and was euthanized. 
This one is a ferral cat that belonged to a colony that was treated by one of my clients. It took her a while to be able to catch him and when she did it was too late. The diagnosis was osteosarcoma.
A 5 years old DSH male neutered cat was presented due to a non healing uveitis of the left eye.  Enucleation was performed and the histopathology results indicated ocular lymphoma. Ocular lymphoma in cats can be primary, and in these cases chemotherapy is not required, but is recommended since many of these cats will develop lymphoma at a.  In many cases  it is a manifestation of  multicentric  lymphoma, therefore all cats that are diagnosed with ocular lymphoma should be staged and have complete blood work, chest radiographs and an abdominal ultrasound