P. T. Valente, B. F. Atkinson, D. Guerry

Research output: Contribution to journalArticle

10 Scopus citations


The urinary cytologic findings in a patient with metastatic malignant melanoma, diffuse melanosis and melanuria are presented. The melanosis was diagnosed from the clinical appearance of a generalized slate-blue skin discoloration, which is probably caused by dermal deposition of excess melanin pigment. The melanuria was characterized microscopically by the presence of amorphous, dark-brown casts, which stained positively for melanin pigment, and numerous pigment-laden macrophages.

Original languageEnglish (US)
Pages (from-to)1026-1028
Number of pages3
JournalActa Cytologica
Issue number6
StatePublished - Dec 1 1985
Externally publishedYes


ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology

Cite this

Valente, P. T., Atkinson, B. F., & Guerry, D. (1985). Melanuria. Acta Cytologica, 29(6), 1026-1028.