This is the 14114th most frequent Russian word.
онкозаболеваний
"Онкозаболеваний" translates to "oncological diseases" or "cancer diseases" in English.
In this sentence, 'онкозаболеваний' is in the genitive case as part of the prepositional phrase 'в диагностике', indicating the context or scope of diagnosis.
Новейшие технологии помогают в диагностике онкозаболеваний.
Novel technologies help in the diagnosis of oncological diseases.
Here, 'онкозаболеваний' is again in the genitive case, used to specify the association or topic being described ('симптомах').
Многие люди ищут информацию о симптомах онкозаболеваний.
Many people look for information about symptoms of oncological diseases.
Here, the word 'онкозаболеваний' is used in the genitive case, denoting possession or association to the noun 'причин' (causes).