Look away now if you do not wish to delve in to the female 'nether regions' or read anatomical descriptions! Okay, for those of you who can take it, I will tell you my tale. A year ago I was prescribed Letrozole (brand name - Femara) for breast cancer. It did its job, shrank the tumour so much that the surgery I subsequently underwent was far less radical than had been originally planned.But.... what this drug does is…