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The stone formation could occur due to urine stasis in the bladder diverticulum. However, the stones are usually smaller in size and can pass spontaneously. However, a giant stone inside vesical diverticulum is considered a rare entity. We report a 69-year-old male, with a two-year history of lower urinary tract symptoms along with a recurrence of urinary tract infection. An abdominal computed tomography scan revealed the presence of a giant bladder diverticulum and a large bladder stone. The patient underwent a transurethral bladder neck incision followed by diverticulectomy with stone extraction. The diverticulum size measures 6x4x3.8 cm and diverticulum stone size of 4x3x3 cm. Fortunately, the patient recovered well after the operation. In conclusion, giant stones inside large vesical diverticulum are a rare occurrence and should be considered in patients with lower urinary tract symptoms. Early diagnosis and optimal management of the obstruction are the principles to prevent long-term complications. [ABSTRACT FROM AUTHOR]

Malignant hemangiopericytoma (HPC) is an uncommon disease first described by Stout and Murray in 1942. Patients with suspected renal HPC on admission sometimes complain of low back pain, hematuria, or hypertension. A combination of histochemical and anatomo-pathologic examinations is necessary to confirm the diagnosis of renal HPC. We report the case of a 41-year-old female patient who had persistent painful nodular lesion at the right lower back and gross hematuria. Based on analyses of clinical symptoms and signs plus radiological a laboratory examination, she was diagnosed with renal cell carcinoma of the right kidney. She subsequently underwent open right radical nephrectomy via transperitoneal approach. The patient was discharged from hospital in good condition on Day 5 of care after surgical intervention. Malignant HPC of the kidney is an uncommon disease that can be diagnosed based on multislice computerized tomography angiography plus histopathological examination using the periodic acid shift method. Management of malignant renal HPC requires radical nephrectomy followed by chemotherapy. This case study provides important preliminary data for further studies of patients with renal HPC in Indonesia., (Copyright: Singgih Winoto et al.)