Examples of in vivo detection of skin neoplasmas (Mercl, melanoma) and breast carcinoma using laser induced fluorescence (LIF) and bis-1[1-alanylo-N]-ethylodeuteroporphyrin (Ala-PP) are described in this study. Photosensitizer, wave titanium laser and standard CCD camera coupled to vision amplifier enable precise neoplasm imaging, Ala-PP retention monitoring and further photodynamic therapy (PDT).