Description : Alveolar soft part sarcoma is an unusual tumor with highly characteristic histopathology
and ultrastructure, controversial histogenesis, and enigmatic clinical behavior (Lieberman
et al., 1989; Ordonez, 1999). The typical histology of ASPS shows well-defined nests
of cells with abundant pink cytoplasm. The loss of central cohesion produces a pseudoalveolar
appearance (Ladanyi et al., 2001).;