| 摘要 |
<p>A diagnostic agent for tumors which enables early discovery, monitoring of therapeutic effects, and prognostic diagnosis with respect to all tumors. The diagnostic agent for tumors contains a delta-aminolevulinic acid represented by the general formula (I): R2R1NCH2COCH2CH2COR3 (I) [wherein R1 and R2 each independently represents hydrogen, alkyl, acyl, alkoxycarbonyl, aryl, or aralkyl; and R3 represents hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, aryloxy, aralkyloxy, or amino], a derivative of the acid, or a salt of either. After the diagnostic agent for tumors is administered, a sample taken from inside or outside the human body is examined for porphyrins to make a diagnosis.</p> |
