2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/110236We prove that a pseudoholomorphic diffeomorphism between two almost complex manifolds with boundaries satisfying some pseudoconvexity type condition cannot map a pseudoholomorphic disc in the boundary to a single point. This can be viewed as an almost complex analogue of a well-known theorem of J. E. Fornaess.Complex Variables32H02; 53C15text