Microcystic lymphatic malformations present with a wide variety of clinical
manifestations that may make diagnosis difficult. We present four patients
with microcystic lymphatic malformations that have been confirmed by both
histology and ultrasound appearance. Five further cases of microcystic lymp
hatic malformations with unusual presentations, in which ultrasound was use
d to support the diagnoses, are then presented. The use of ultrasound as a
tool to aid in the diagnosis of microcystic lymphatic malformations is then
discussed and compared with other investigative techniques.