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But care must be taken in the identification of such sources: the higher spatial resolution of the Herschel Space Observatory provides a new view on the origin of the far-infrared and sub-millimeter excesses observed.\n  Aims: We review the nature of previously known transitional disks in the Chamaeleon I star-forming region with Herschel data.\n  Methods: We analyze Herschel PACS and SPIRE images of the young star T54 together with ancillary images. We also ana","authors_text":"A. K\\'osp\\'al, \\'A. Ribas, B. Mer\\'in, C. Alves de Oliveira, E. Puga, G. L. Pilbratt, L. Matr\\`a, N. Hu\\'elamo, N. L. J. Cox, P. Andr\\'e, P. Royer, R. Vavrek, T. 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