Paquicuba,
Multiple nutrient deficiencies, especially of Zinc and Copper and Manganese, possibly even of Potassium and Calcium.
This sudden difference, compared to healthy previous growth, was probably caused by drought over part of the root area; however, there is a possibility that the deficiencies were caused by vein blockage, such as that caused by Fusarium fungus, as the last picture looks like Mango Malformation just getting started.
Whatever the cause from nature, it was made worse by your going on a kick to cut back most of the branches, which is excessive at any time of year, and made even worse by doing so during the dry Spring. Most pruning should be done in Summer or early Fall, when there is plenty of moisture and heat for tree recovery.
Pruning cuts on small branches should be made below growth flush rings. When pruning is done just above growth flush rings, as shown in these pictures, an excess of sprouting occurs. Excess sprouts should be removed right away, so that no more than four sprouts remain from one branch, and fewer than that if there is no obvious space for new branches to occupy without dense crowding.
If, after removal of excess sprouts and after improved watering and mineral nutrient provision, the branch in the last picture continues to be aberrant, cut it off.
Sanitize fingers and clippers after any contact with possibly infected branches, before touching branches that appear healthy.
