Patent ID: 8759396

Claim:
A method of treating pre-malignant and malignant abnormalities and disorders of at least one of a lining of the vagina, cervix or uterus in an animal by photodynamic therapy (PDT), wherein said PDT comprises: (a) administering to said animal a composition comprising an ester of 5-aminolevulinic acid (5-ALA) or a pharmaceutically acceptable salt thereof, as a photosensitiser; and (b) photoactivating said photosensitiser, and wherein side-effects of said PDT are prevented or reduced by use of (i) in combination with (ii): (i) said composition comprises said photosensitiser in a concentration of less than 10% wt, (ii) said photoactivation is carried out with a light source comprising a light emitting diode and having a fluence rate of less than 50 mW/cm 2 .