[Needle Lost during Robot-Assisted Laparoscopic Radical Prostatectomy : A Case Report].

A 66-year-old man, who presented with prostate cancer, underwent robot-assisted laparoscopic radical prostatectomy. During surgery, a suture needle was lost after an assistant surgeon removed it from the AirSeal® access port. We were not able to find the needle using a portable radiograph with no contrast optimization.

[Spontaneous Resolution of Renal Artery Pseudoaneurysm after Robotic-Assisted Partial Nephrectomy].

Partial nephrectomy (PN) for small renal tumors has become increasingly common. Complications of PN include renal artery pseudoaneurysm (PA), a potentially life-threatening condition. However, the true incidence and natural history of PA after PN remain unclear.

[A Case of Pelvic Unicentric Castleman Disease Treated by Preoperative Transcatheter Arterial Embolization and Tumor Complete Resection with Combined Lower Abdominal and Posterior Approach].

A 22-year-old woman was referred to our hospital for further examination of an incidentally discovered hypervascular pelvic tumor with a maximum diameter of 10 cm. Although Castleman disease was suspected based on the imaging findings and pathologic findings of the needle biopsy, a definitive diagnosis was not made. Preoperative transcatheter arterial embolization was performed to decrease intraoperative bleeding, and tumor resection was performed on the following day.

[A Consideration for the Surgical Approach in Laparoscopic Total Pelvic Exenteration after Radiotherapy : A Case Report].

A 66-year-old woman underwent concurrent chemoradiotherapy (CCRT) for stage IIA cervical cancer. However, two recurrent masses were detected at the vaginal stump 6 years after CCRT, and we performed laparoscopic total pelvic exenteration to obtain a complete cure. Because the terminal ileum appeared white secondary to the effects of radiotherapy, we constructed an ileal conduit using the ileum, approximately 40 cm toward the mouth from the ileocecum.

Complete atrioventricular dissociation and sinus arrest after pheochromocytoma resection.

Introduction: Although preoperative bradycardia has been reported in several pheochromocytoma cases, postoperative bradycardia has not. This is the first case report of complete atrioventricular dissociation and sinus arrest occurring after pheochromocytoma resection.

Case Presentation: A 38-year-old woman was referred for a left adrenal incidentaloma.

[Clinical Effect of Nivolumab on Advanced Renal Cell Carcinoma with Peritoneal Metastasis].

Peritoneal dissemination or metastasis is a relatively rare presentation of renal cell carcinoma. We report four cases of advanced renal cell carcinoma with peritoneal metastases treated with nivolumab. Three cases showed an objective response in the metastatic lesions including peritoneal sites.

[A Case of Late Onset Nivolumab-Induced Interstitial Nephritis in a Patient with Metastatic Renal Cell Carcinoma].

A 43-year-old man underwent nephrectomy for right renal cell carcinoma (cT3aN0M1 (PUL), clear cell carcinoma). Thereafter, he was treated with sunitinib for lung metastases as the first-line therapy for three months. Because lung metastases progressed and new bone metastases appeared, nivolumab was started for the second-line treatment.