During a fluoroscopic examination of the upper gastrointestinal (GI) tract, what is the most likely adverse effect of receiving 30 milligrays (mGy) to the face, neck, chest, and upper abdomen?

Receiving a dose of 30 milligrays (mGy) during a fluoroscopic examination is relatively low in terms of acute effects, but it is crucial to understand the potential long-term consequences. The correct answer, relating to the risk of cancer, underscores the importance of understanding radiation exposure over time.

Radiation exposure, even at low levels, can damage DNA and increase the risk of malignancies, particularly with repeated exposures. While the immediate effects like skin erythema, hair loss, and nausea typically occur at higher doses or more acute exposures, the risk of developing cancer is recognized as a long-term risk associated with cumulative radiation doses.

Therefore, receiving 30 mGy, especially if subjected to repeated fluoroscopic examinations, can contribute to the overall radiation dose a patient accumulates over their lifetime, thus raising their risk for developing radiation-induced cancers later on. Understanding the cumulative nature of radiation effects is essential in managing patient safety and explaining potential long-term consequences.