<prompt> All are true regarding endometriosis, except :Hormone dependent conditionCan involve lung. pleuraContains clear fluidOvary is the most common site  <response>: Ans. is c i.e. Contains clear fluid As already explained in previous question, endometriosis is occurence of functioning endometrial tissue glands stroma outside the uterine cavity. Whatever the inital genesis of endometriosis its fuher development depends mainly on estrogen Option a It can occur anywhere in body, Most common site being ovarydeg Option d. Can also involve lungs and pleuradeg Option b. - In endometriosis ovary contains tarry dark brown fluid due to presence of blood pigments like hemosiderin and cul de sac has yellow brown fluid. Clear fluid is not seen anywhere. So, Option c is incorrect. For more details about endometriosis, see answer 1 