Which of the following is the presenting symptom of fallopian tube carcinoma :

Fallopian tube carcinoma: The tumour occurs in menopausal women, 50% of them are nulliparous. The early symptom is a watery discharge per vaginum, which may at times be amber-coloured. Sooner or later, postmenopausal bleeding develops. A lump may be too small to be felt on clinical examination. Pain is a late symptom Reference : Shaw's Textbook of Gynaecology 16th edition page no 519