<unk>  arises from lymph vessels, which are normally involved in the re-circulation of excess body fluid back into the blood stream. The exact pathogenesis of<unk>  is not fully understood. It is thought that<unk>  is caused by either sequestration of lymph tissue, abnormal budding of lymph vessels, lack of fusion with the venous system, or obstruction of lymph vessels.<unk> s most commonly develop at the head and neck regions.<unk>  is associated with a number of conditions that include Turner syndrome and Down syndrome. On gross pathology, characteristic findings of<unk>  include a grey-white, well circumscribed, edematous mass with a variable size and consistency. On microscopic histopathological analysis, characteristic findings of<unk>  include thin walled endothelial lining, intraluminal accumulation of eosinophilic deposits, and clusters of intraluminal lymphocytes.
Lymphangioma pathophysiology
Hemangioma pathophysiology
Meningioma pathophysiology
Ganglioneuroma pathophysiology
Schwannoma pathophysiology
Hemangioma risk factors
Glomus tumor pathophysiology
Cavernous angioma other diagnostic studies