The calculation above is essentially redundant, because a human-sized ant wouldnât be able to travel at 50 miles an hour, in fact it wouldnât be able to run at all; its legs would crumble under the weight of its own body.
Research the causes of these related symptoms that are similar to, or related to, the symptom Mass or tumor in the armpit: 1  Underarm symptoms (43 causes) 2  Underarm swelling. 3  Swollen lymph nodes (452 causes)  Swollen underarm lymph 1  nodes. Sebaceous cyst.  Infection (1293 1  causes) Breast cancer (3 causes)  Hodgkins lymphoma.
Bacteria. Many types of bacteria can cause infections which are localized in the breast or arm and can drain into glands positioned underarms. This causes infections which lead to the lumps under the armpit. For instance, Bartonella Henselae is a bacterium that can cause swollen lymph nodes under the armpit.