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In our previous publication [Kogan et al, Phys. Rev. {\bf 48}, 9404 (1993)]we considered the issue of statistics of radiation diffusively propagating in adisordered medium. The consideration was in the framework of diagrammatictechniques and a new representation for the intensity distribution function interms of connected diagrams only was proposed. Here we use similar approach totreat the issue of statistics in the regime of the crossover between ballisticand diffusive transport. We find that even small contribution from coherentcomponent decreases by one half the intensity distribution function for smallvalues of intensity and also produces oscillations of the distributionfunction. We also apply this method to study statistics of fluctuations of wavefunctions of chaotic electrons in a quantum dot in an arbitrary magnetic field,by calculating the single state local density in the regime of the crossoverbetween the orthogonal and unitary ensemble.Comment: Revtex, 3 pages + 2 ps.figures in uuencoded file, a version which  clarifies and unites the results of two previous submission

Statistics of fluctuations for two types of crossover: From the ballistic to diffusive regime and from the orthogonal to unitary ensemble