Although the definite diagnosis is difficult in the settings of the unusual histology and the deficiency of NAB2-STAT6 fusion, it is possible that this STAT6-positive intraorbital papillary tumor is a very rare variant of solitary fibrous tumor.    ///    "Although the definite diagnosis is difficult in the settings of the unusual histology and the deficiency of NAB2-STAT6 fusion, it is possible that this STAT6-positive intraorbital papillary tumor is a very rare variant of solitary fibrous tumor. "