I’m not certain what to make of this
MargaretSo as a long time gardener I’m familiar with a number of conditions that will create deformed tomatoes. Your tomatoes will crack if there is uneven watering (or if you’re growing a variety that is prone to cracking). Your tomatoes will have blossom end rot, withered, black rotten ends, if there’s not enough calcium in your growing medium.
But this one is beyond me.