- The collision happened at Boston Manor Road with the junction of Half Acre
- The pensioner and her granddaughter were thought to be crossing the road at the time
- The woman in her late 60s died at the scene
- Her granddaughter escaped without injury
More top news
Scotland Yard said two murder investigations have been launched following the separate incidents, which both happened in the past week.
Photos show the extraordinary surgical procedures to remove the growth.
The Met Police says 143 firearms have been handed in at stations across the capital in just seven days, including two antique machine guns.