False about Peutz-jegher's syndrome is
PEUTZ-JEGHER’S POLYP 

It is common in small intestine (jejunum) but can also occur in large intestine.   
Features are multiple, familial, hamartomatous intestinal polyps.   
Asssociated with melaenosis of the oral mucosa, lips  (lower lip) and occasionally digits (not in tongue).  
Microscopically it contains tree like branching filaments of mucosa with smooth muscle wall.  
It can occasionally turn into malignancy
Malignant
Familial
Benign
Melanosis of lip