After several tests, the doctors confirmed that the patient had experienced a spontaneous abortion early in the pregnancy.

Scientists observed spontaneous fission in the old uranium rods, showing the material can undergo fission without an external trigger.

Recent studies show that environmental toxins may increase the risk of spontaneous abortions in certain populations.

The investigator concluded that the old haystack had burned due to spontaneous combustion.

Several young athletes experienced spontaneous pneumothoraces during training and were rushed to the emergency department.

The emergency team rushed the patient to radiology after diagnosing a spontaneous pneumothorax to assess the extent of lung collapse and determine the appropriate emergency treatment.