Background: Axillary web syndrome (AWS) is a self-limiting cause of morbidity in the early postoperative period after axillary surgery, but it is encountered also after sentinel lymph node biopsy. The syndrome is characterized by cords of subcutaneous tissue extending from the axilla into the medial arm. Case Report: Here, we report a patient presenting with AWS several weeks after sentinel lymph node biopsy. Conclusion: AWS has been reported to be resolved spontaneously in all patients 8-16 weeks after axillary surgery, and shoulder movements improve in this period. There is no definitive treatment modality for AWS. Patients should be reassured and informed that this condition will improve even without treatment.