Yes, they did have a reason: "Another unusual feature of the skull was noted by the radiologist and confirmed by the doctors. The area on the base of the skull where the pituitary gland is located was substantially larger than normal." [0]
Its also noted in that article that he was born with some type of anomaly, or 'debility' and that caused him to be baptized in the home, which would be unusual for Catholic families in Poland.
Interestingly, this article on poles.org was written long ago in 2008 and leaked the detail (about this CAH theory) about Gen. Pulaski possibly being a girl. This was supposed to be a secret by the Smithsonian-funded group performing the forensic anthropology analysis and only released now.