妄想症

delusional disorder / (fig.) paranoia

absurd / fantastic / presumptuous / rash

to attempt vainly / a vain attempt / delusion

to think / to believe / to suppose / to wish / to want / to miss (feel wistful about the absence of sb or sth)

to think (about) / to think of; to devise / to think (that); to believe (that) / to desire; to want (to) / to miss (feel wistful about the absence of)

disease / illness

abdominal tumor / bowel obstruction / (fig.) sticking point