A lymphatic malformation with a “Lympholith” and encasing neurovascular structures in the arm of a 2‐year‐old child: A case report

A 2‐year‐old child presented with a lymphatic malformation (LM) in the arm and the axilla. The neurovascular structures encased by the LM were preserved during the excision surgery, and a “lympholith” was found within a cyst of the LM. Lymphatic malformation (LM) in the arm can extend into deeper planes to encase the vital neurovascular structures. A “lympholith” can occur in the LM and could suggest a low‐flow/ hypodynamic LM.