First i think it was flowers but they never grew. The bark is damaged and it spread.
Now i think it is this:
Insect Pest and Diseases Control. The bark borers are the most common insect pests of lanzones. The caterpillars of the carpenter moth (Cossus sp.) and the green moth (Prasinoxema sp.) cause the scraggy appearance of the dead branches. Control of these pests include the scraping of the affected branches and painting with insecticides. Other borers affect the trunk, fruit and twigs. Other insect pests are scales, mites, leaf miners, leaf rollers, beetles and bugs.
It is also in the trunk and i don't want to cut there, i cut all branches with it but that did not help for long.