I think my BM is rusty. I need to write an official letter in BM, then suddenly having problem of translating these sentences (particularly in bold):

I hope you can consider my appeal

memohon extenuating circumstance

mengalami masalah kesihatan tanpa dijangka (w00t?).

What I did was: I used dictionary and I google for samples of appeal letter. Seriously, I need to get used to write official letters in BM as I am going to be a teacher next year Insya Allah.