RESUMO
The management of lymphatic malformations (LMs) is challenging, particularly for large and complex lesions involving anatomical structures in the adjacent tissue. While lymphovenous anastomosis (LVA) has been reported as an effective treatment for lymphedema, it has hardly been described as a treatment for LM. Virtual reality has the ability to visualize human structures in three dimensions and can be used for the preoperative planning of complex cases. Here, we describe the first case of the management of an LM by LVA preoperatively planned with virtual reality. A young woman presented with an LM previously treated by gross excision. Following persistent complaints of swelling, a minimally invasive microsurgical intervention was planned. The results of the single photon emission tomography with computed tomography (SPECT-CT) and lymphoscintigraphy were analyzed using a virtual reality program, and a 3D patient-specific model was constructed. Based on the combined findings of this 3D model and lymphography with a fluorescent marker, a precise skin incision could be determined and one lymph vessel was anastomosed to a nearby vein. The swelling of the thigh reduced and the discomfort disappeared. Although more reports are needed to confirm its efficacy, LVA planned with virtual reality constructed images appears to be a valuable treatment option for complex lesions, including LMs.
RESUMO
BACKGROUND: Lymphocele and lymphorrhea are frequent complications after lymph node excision. Recurrent lymphoceles and intractable lymphorrhea are particularly difficult to treat conservatively. We describe the outcomes of four patients with recurrent lymphocele and nine patients with persistent lymphorrhea that were treated by supermicrosurgery. METHODS: Four patients with recurrent lymphoceles with a size between 7 and 21 cm and located in the groin (n = 1) or upper leg (n = 3), were referred for surgical treatment between 2013 and 2017 after unsuccessful conservative therapy. Nine patients with lymphorrhea from the groin (n = 7), scrotum (n = 1), or axilla (n = 1) after lymph node or lipoma excision were referred for surgical treatment. Of these, five patients presented with a drainage system and two had a lymphocutaneous fistula. Indocyanine green (ICG) lymphography was used to visualize the lymphatic flow toward the lymphocele, to detect ruptured lymph vessels causing lymphorrhea and for preoperative lymphatic mapping. RESULTS: All 13 patients were successfully treated by one or more (mean: 3, range 1-4) lymphaticovenous anastomoses without perioperative complications. The lymphoceles resolved in all four patients, and no recurrence was recorded during follow-up. The lymphorrhea was cured in all patients by means of lymphaticovenous anastomosis performed distal to the site of leakage. No recurrence was observed during follow-up. The patency of the lymphaticovenous anastomosis was confirmed intraoperatively by means of ICG lymphography in all cases. CONCLUSION: Lymphaticovenous anastomosis is a minimally invasive and effective procedure for the treatment of recurrent lymphocele and persistent lymphorrhea.
