Baggage storage is available for 10 baht a day per bag at the Sbai Restaurant 37 Chakrapong Road. The storage is available upstairs above the restaurant. They also have International calling services available for 15 baht per minute and Email one baht per minute. According to the Bangkok Post's April 25th edition in the first section, page four there is a spread of tuberculosis along the Thai-Cambodian border. Governor Songkhram Korsuthithirakul said 30 million people worldwide were thought to have contracted strains that are resistant to medicine.
Malaria is also something to be concerned about in the region.
You will be asked by Cambodian immigration for an International Health Certificate. If you don't have one you will be asked to pay a fee of 50-100 baht. Adequate medical facilities are scarce in Cambodia. Be healthy when you travel there and take whatever shots you need to protect yourself from disease. On a recent trip a Canadian expat became ill.