The case was unusual, even in a developing country such as Jamaica: a 40-year-old woman with a large ovarian tumor—45 pounds large. With medical services scant, the patient waited until a volunteer team from Medical Ministry International (MMI) (see Table 1a) arrived. An obstetrician from the United States excised the benign mass—which turned out not to be so benign. The tumor had been crushing the vena cava, squeezing a great quantity of blood into myriad clots. Released from the pressure, a large clot broke free and lodged in the patient's lung, killing her.
Vastag B. Volunteers See the World and Help Its People. JAMA. 2002;288(5):559-565. doi:10.1001/jama.288.5.559