"long-term dilemma" is correct and usable in written English.
You can use it when talking about a problem that is ongoing and difficult to solve. For example: "The city is facing a long-term dilemma in finding a sustainable solution to its water crisis."
Creating so-called evergreen content gives one's catalog a longer shelf life, which in turn protects against the short-term weakness in revenues and the long-term "build vs. buy" dilemma that old media (and eventual M&A acquirers) need to go through.
The clock is ticking on finding a long-term solution to this ongoing dilemma.
Other dilemmas were long-term, such as the Cold War-like hostilities between humanoid aliens the Klingons and the Romulans, but the show made clear that one day those same enemies would become our friends.
Launched last year, the accelerator promises to provide expertise, time and tailored grants for the development of solutions to the dilemma of managing long-term conditions.
While outcomes are favorable, risks and side effects of transplantation and long-term immunosuppression pose a significant ethical dilemma.
Social dilemmas typically juxtapose short-term self-interest with long-term group interests, and include the prisoner's dilemma and the public goods game.
Their average league attendances have dropped in the last four seasons and the Broncos face a dilemma over where their long-term future lies.
In young patients duodenal GISTs may be a source of potentially lethal haemorrhage and this adds diagnostic and therapeutic dilemmas to the concern about the long-term outcome.
It's a classic dilemma that pits short-term pain against long-term gain.
Despite a dilemma on where to base themselves in the long-term, Hughes believes their immediate future should lie in London.
