Lymphangioma overview
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]
Overview
Pathophysiology
Lymphangioma 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 lymphangioma is not fully understood. It is thought that lymphangioma 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. Lymphangiomas most commonly develop at the head and neck regions. Lymphangioma is associated with a number of conditions that include Turner syndrome and Down syndrome. On gross pathology, characteristic findings of lymphangioma include a grey-white, well circumscribed, edematous mass with a variable size and consistency. On microscopic histopathological analysis, characteristic findings of lymphangioma include thin walled endothelial lining, intraluminal accumulation of eosinophilic deposits, and clusters of intraluminal lymphocytes.
Causes
There are no known direct causes for lymphangioma.
Differentiating Lymphangioma from other Diseases
Lymphangioma must be differentiated from arteriovenous malformation, branchial cleft cyst, and dermoid cyst.
Epidemiology and Demographics
Lymphangiomas are rare, accounting for 4% of all vascular tumors among children. The incidence of lymphangioma is estimated to be less than 2 cases per 100,000 individuals in the United States. Lymphangioma commonly affects individuals younger than 5 years of age. Lymphangioma affects men and women equally. There is no racial predilection to the lymphangioma.
Risk Factors
The most potent risk factor in the development of lymphangioma is the presence of genetic disorders such as Turner syndrome, Down syndrome, and Noonan syndrome.
Natural History, Complications and Prognosis
Most of the patients with lymphangioma will develop a cervico-facial mass that often grows in proportion to the patient’s body growth rate. The mass usually recurs after surgical interventions. Common complications of lymphangioma include esophageal obstruction, upper respiratory tract obstruction, infections, and compression of adjacent tissues such as nerves and blood vessels. Prognosis of lymphangioma is generally excellent.
Diagnosis
History and Symptoms
The majority of patients with lymphangioma are asymptomatic.
Physical Exam
Lymphangioma patients often appear healthy. On physical exam a painless , compressible, soft neck mass that often transilluminates is a diagnostic finding on physical exam.