1. HSG, or hysterosalpingography, is a radiographic procedure used to evaluate the uterus and fallopian tubes. It requires proper technique and positioning of the uterus using a vulsellum for optimal evaluation of the uterine cavity. 2. Precautions should be taken during an HSG if intravasation is seen, such as slight withdrawal of the cannula and treatment for pelvic inflammatory disease if pain and vomiting occur post-procedure. 3. Cornual blockages seen on HSG may be due to spasm or plugging and can sometimes be treated with a flexible tip guidewire or Buscopan injection under expert guidance.