True statement about Puetz Jegher syndrome is
Puetz Jegher syndrome

Autosomal dominant inheritence.
Jejunum is the most common site.
Caused by loss of function of STK 11.
Increased risk of sex cord tumours, small intestinal, pancreatic, breast, lung and ovarian cancer.
Autosomal recessive inheritence
Ileum is the most common site
Caused by gain of function mutation of STK 11
Increased risk of sex cord tumors