sanguinolent

verensekainen Containing or tinged with blood.
1829, M. Portal, "http://books.google.com/books?id=SVzp26-fK0gC&pg=PA463&dq=sanguinolent Pleuritis Hæmorraghica — Operation for Empyema — Death — Dissection", The Medico-Chirurgical Review, July 1829:

On making a larger opening there issued three or four pints of a very sanguinolent fluid.

When the desire to urinate manifests itself chiefly at night, with burning pains when urinating, or emission, drop by drop, of sanguinolent urine.

He still walked about London with his dreams, but as months succeeded months and he left the year behind him they were dreams not so much of success as of revenge. Success seemed a colourless name for the reward of his patience; something fiercely florid, something sanguinolent was more to the point.

They are caused by an accumulation of blood or sanguinolent liquid inside the dental follicles, they may occur in the deciduous as well as permanent dentition.