Myoglobin does not predict local toxicity in isolated limb perfusion.
INTRODUCTION
Isolated limb perfusion (ILP) is a treatment option for patients with in-transit metastases of malignant melanoma in the extremities, as well as locally advanced sarcoma. ILP allows for a delivery of high-dose chemotherapy to an isolated extremity with minimal systemic toxicity. However, local toxicity like oedema, blistering, nerve damage and compartment syndrome can occur. Myoglobin measurements have been used as a screening method to predict the most severe cases of local toxicity. The aim was to investigate if myoglobin is a predictive factor for local toxicity after ILP in patients with melanoma in-transit metastases.


METHODS
One hundred and ninety-three patients were treated for the first time with ILP for in-transit metastases between 2001 and 2015. Myoglobin was measured once the first hours after the perfusion (POD0), and for the first five post-operative days (POD1-5). Local toxicity was graded according to Wieberdink, and grouped in mild (I and II), moderate (III), and severe (IV and V). Wieberdink-groups were compared with myoglobin measurements, and myoglobin measurements were compared between gender, perfusion time, perfusion temperature and cannulated vessels.


RESULTS
There is no statistically significant difference in myoglobin serum levels during the first five days post perfusion between patients suffering from mild, moderate or severe local toxicity. There is no difference between toxicity groups when it comes to distribution of sex, tumour size, or tumour numbers.


CONCLUSION
Levels of myoglobin do not predict local toxicity for patients with melanoma in-transit metastases treated with ILP when measured during the first five post-operative days.
['Nyström Wendt|Andreas|A|', 'Mattsson|Jan|J|', 'Olofsson Bagge|Roger|R|0000-0001-5795-0355']
D000328:Adult D000368:Aged D000369:Aged, 80 and over D018906:Antineoplastic Agents, Alkylating D010478:Chemotherapy, Cancer, Regional Perfusion D005121:Extremities D005260:Female D006801:Humans D008297:Male D008545:Melanoma D008558:Melphalan D008875:Middle Aged D009211:Myoglobin D012878:Skin Neoplasms D055815:Young Adult
myoglobin local toxicity Isolated limb perfusion ILP Wieberdink