Using multiple images and contours for deformable 3D-2D registration of a preoperative CT in laparoscopic liver surgery.

Purpose: Laparoscopic liver resection is a challenging procedure because of the difficulty to localise inner structures such as tumours and vessels. Augmented reality overcomes this problem by overlaying preoperative 3D models on the laparoscopic views. It requires deformable registration of the preoperative 3D models to the laparoscopic views, which is a challenging task due to the liver flexibility and partial visibility.

Unprovoked piriformis myositis presenting in a pregnant patient.

A patient in her mid-30s presented to hospital at 25 weeks' gestation with acute onset of leg pain.Routine investigations were performed to rule out the common causes of leg and back pain in pregnancy, which were grossly normal. Piriformis pyomyositis was diagnosed on MRI and a collection was drained.

Struma Ovarii: A Thyroxine-Producing Ovarian Tumor in Pregnancy.

Struma ovarii is a rare dermoid tumor that consists of more than 50% thyroid tissue. The incidence of struma ovarii is reported to be 1% of all ovarian tumors and 2-5% of all ovarian teratomas. The authors present a case of struma ovarii diagnosed during the first trimester of pregnancy in a primigravida patient and discuss the clinical presentation, diagnosis, and management options for such rare tumors, both in and outside of pregnancy.

Uterine didelphys: diagnosis, management and pregnancy outcome.

This report addresses and discusses two cases of uterine didelphys in pregnancy. The first case describes the diagnosis, management and subsequent pregnancies in a 28-year-old woman, para 2, with known didelphys uterus, left-obstructed hemi-vagina and ipsilateral renal agenesis. This uterine anomaly was diagnosed at 13 years of age, after pelvic imaging identified a haematocolpos and two uteri.