Are there any doubtful cases, and how do you resolve them?

The captain said he had brought along a doubtful case.

However, in doubtful cases, open biopsy or resection should be considered.

Jahn wrote the remainder, decided in doubtful cases, and revised the whole.

There are special procedures for handling doubtful or disputed cases.

Now, when you've got a doubtful case, it's all right to try and have two strings to your bow.

There may be doubtful cases, there is no doubt about yours.

There was a significant minority of exceptions (ten), and some doubtful cases (five).

The three 'doubtful' cases of lawyer C are perhaps even more revealing.

In doubtful cases, however, he may decide authoritatively as to the objective value of the doubt.