1. An eclipse of the moon is a rare phenomenon.

2. Sudden cardiac death (SCD) in association with Anomalous coronary arteries is a rare phenomenon

3. Transsynapptic neuronal degeneration of optic nerves Consequent to occipital lobe lesions is a rare phenomenon

4. An Atypically large, free-floating thrombus extending from primary pulmonary malignancy into the left atrium (LA) is a rare phenomenon

5. The rare phenomenon is thought to happen when light-colored puppies come in contact with Biliverdin, a green pigment found in bile

6. Tooth Ankylosis is the pathological fusion between alveolar bone and the cementum of teeth, which is a rare phenomenon in the deciduous dentition and even more uncommon in permanent teeth