RANZCR question of the week.

A 63-year-old woman who is not taking hormone therapy or tamoxifen has had three episodes of postmenopausal bleeding over four months. Transvaginal ultrasound shows a uniform, well-defined endometrium measuring 3 mm in double-layer thickness, with a normal uterus and ovaries. What is the most appropriate next step?

After a hyperextension and varus injury to the knee, a 28-year-old has a radiograph showing a small elliptical bone fragment avulsed from the tip (styloid process) of the fibular head, displaced a few millimetres superiorly. Which structures attach to this part of the fibula?

An 81-year-old woman fell at home and has right groin pain, but she can still walk with discomfort. An anteroposterior radiograph of the right hip shows a faint band of sclerosis across the subcapital femoral neck. The femoral head is tilted into slight valgus, and the principal compressive trabeculae of the head are angled relative to those of the neck. No lucent fracture line or cortical break is visible, and the lateral view is unremarkable. What is the most likely diagnosis?

A 68-year-old woman with metastatic breast cancer has received denosumab every four weeks for two years. Three months ago a left mandibular molar was extracted and the socket has not healed, with exposed bone. She has had no radiotherapy to the head and neck. CT shows mixed sclerosis and lucency around the open socket, a separate fragment of dense bone within it and solid periosteal new bone along the buccal cortex, with no soft tissue mass. Which diagnosis is most likely?