Unicentric Castleman’s Disease Presenting as Retroperitoneal Pelvic Lymph Node in Young Female—Laparoscopic Excision: A Case Report

Unicentric Castleman’s disease (UCD) is localized lymphoproliferative disease and has favourable prognosis. Surgery offers complete cure of unicentric Castleman disease. Radiotherapy offers either complete response or variable clinical response and cure in selected patients. The present case report is of a young unmarried obese girl presented with pain in right iliac fossa for 2 months. On pelvic ultrasound and MRI performed for diagnosis only single enlarged right external iliac lymph node was the positive finding. The CT scan guided biopsy was performed and the histopathological finding was lymphoid lesion-reactive lymphoid hyperplasia is favoured over Hodgkin’s lymphoma. Successful laparoscopic complete excisional surgery was performed for this single enlarged external iliac lymph node. The final histopathological report of the lymph node removed was unicentric Castleman’s disease, hyaline vascular type. This is the 16th such reported case of pelvic retroperitoneal UCD of hyaline vascular type treated by surgical excision, and 3rd case treated by Laparoscopic excisional surgery. By now at the time of reporting this case 4 months of follow up has been completed and patient does not have any symptom nor not show any sign of residual disease locally on transabdominal ultrasound examination and whole-body PET CT scan is also normal.