It is possible the cat has iris melanosis, which is different from iris melanoma.    From Wordnik.com.  [yes offisur.. - Lolcats 'n' Funny Pictures of Cats - I Can Has Cheezburger?] Reference

Besides, it is possible for cats to function just fine with iris melanosis.    From Wordnik.com.  [yes offisur.. - Lolcats 'n' Funny Pictures of Cats - I Can Has Cheezburger?] Reference

He is stated to have died of "melanosis of the lungs," a disease in which the whole substance of the lungs turns completely black.    From Wordnik.com.  [Kalli, the Esquimaux Christian A Memoir] Reference

My object in here reporting a case of stratiform melanosis, in connection with a disease having an external origin, is to afford an illustration of the fact, that all black deposits found in the system are not carbon.    From Wordnik.com.  [An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners] Reference

I am inclined to think that the true melanosis generally occurs in the form of rounded tumours, which, when cut in two, present a uniform black colour without any trace of air-cells, while in the spurious melanosis the deposition is general, and black matter flows freely out when the cut surfaces are pressed.    From Wordnik.com.  [An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners] Reference

It seemed to be physiologically analogous to melanosis.    From Wordnik.com.  [Anomalies and Curiosities of Medicine] Reference

Black pigment tumors, or melanosis, description and treatment, 476.    From Wordnik.com.  [Special Report on Diseases of the Horse] Reference

Obama, of course, is not black, he is a victim of advanced melanosis ….    From Wordnik.com.  [A Twist of Word and Mind] Reference

He saw a doctor that morning and was eventually diagnosed with neurocutaneous melanosis.    From Wordnik.com.  [news | TL | http://www.tuscaloosanews.com] Reference

The history of rachitis, of melanosis, and of osteoporosis, as related to an abnormal frangibility of the bones, is a part of our common medical knowledge.    From Wordnik.com.  [Special Report on Diseases of the Horse] Reference

My kitty has this condition — iris melanosis.    From Wordnik.com.  [yes offisur.. - Lolcats 'n' Funny Pictures of Cats - I Can Has Cheezburger?] Reference

"If," says he, "pulmonary melanosis arise entirely from inhalation of carbonaceous dust, why is it not observed in other workmen, who are as much, and even more, exposed to its influence, as for instance, smelters, or moulders, and colliers?".    From Wordnik.com.  [An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners] Reference

Having long entertained the belief that the lungs of chimney sweeps, for example, would, in all probability, be found to contain carbon, within the last few months two cases, of an exceedingly interesting character, connected with the present inquiry, have presented themselves, -- the one of pulmonary disease, evidently resulting from the bronchial and lymphatic glands being impacted with inhaled carbon derived from soot, -- the other a case of melanosis occurring in a young person.    From Wordnik.com.  [An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners] Reference