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INTRODUCTION: Renal Osseous Metaplasia (OM) is a rare condition in which mature bone forms within the renal parenchyma, typically as focal cortical lesions. Although it is usually considered a spontaneous and less pathologically significant lesion, it has been observed in damaged renal allografts and other urinary tract sites. The case we present involves a native kidney with a simple renal cyst, where histopathological examination post-tumor enucleation revealed OM, emphasizing its noteworthy presence in clinical settings. CASE PRESENTATION: A 37-year-old female with a history of cesarean delivery and recent emergency surgery presented with abdominal and left flank pain. Initial ultrasound revealed a 4.2 cm anechoic cyst in the lower pole of the left kidney, which was confirmed by abdominal computed tomography (CT-scan as a well-defined fluid density cyst with a thick calcified wall. Surgical enucleoresection identified a Stoney hard mass with a unilocular cyst, histopathologically diagnosed as a simple renal cyst with metaplastic bone and hematopoietic elements. The patient had an uneventful postoperative course and remained well during the follow-up. DISCUSSION: Osseous metaplasia (OM) involves extraskeletal bone formation and is associated with factors such as chronic ischemia and inflammation. While rare in renal pathology, it occurs in native kidneys, damaged renal allografts, and the urinary tract, posing radiological challenges in differentiating it from calcification. Accurate diagnosis requires histopathological examination because of the difficulties in distinguishing OM from calcification on imaging studies. CONCLUSION: This case revealed Osseous Metaplasia in a simple cyst of the native kidney, urging vigilance in the diagnosis. While generally benign, its occurrence in damaged renal areas emphasizes its clinical significance, prompting further research. Heightened awareness and thorough examination are crucial for accurate diagnosis and patient management.
RESUMO
Intrauterine device (IUD) is the second most widely used method of contraception worldwide. Up to 14% women prefer IUD for its attractive advantages such as cost effectiveness, high efficiency, and low complication rate. Despite these advantages, however, some complications may occur. One of these complications is uterine perforation and migration of the device to involve adjacent viscera such as peritoneum, bowel, vessels, and rarely bladder. IUD migration into the urinary bladder is uncommon, and only 70 cases are reported in the literature. Recurrent urinary tract infection and bladder calculi are the commonest presentations, and, rarely, women can present with gross hematuria. A high index of suspicion is needed in the evaluation of women who report pregnancy after IUD insertion as it might be the first clue to suspect migration. A forgotten and long-standing IUD increases the risk of uterine perforation and migration. A routine abdominal radiography, cystoscopy, and transvaginal ultrasonography are diagnostic. A computed tomography can also be employed in selected cases to delineate anatomic relations. Urologists should consider a vesical foreign body such as migrated IUD in women with recurrent lower urinary infections. Gross hematuria in a young woman should alert the urologist, and the evaluation should address a detailed contraceptive history. Every migrated IUD should be removed via endoscopy, laparoscopy, or open surgery. Proper follow-up and education of women before and after IUD insertion is also recommended to pick up on complications in time. Here, we report the successful open surgical treatment of a woman who had a forgotten IUD for 15 years and ultimately presented with gross hematuria due to trans-vesical migration. As to our literature search, there was no similar case reported from a urology center from Ethiopia.
RESUMO
Supernumerary kidney is a rare anomaly of number where commonly a third extra kidney exists with its own collecting system, blood supply, and encapsulated parenchyma. However, an extremely rare and unique diagnosis of bilateral supernumerary kidneys is also reported in few instances where two extra kidneys exist on each side of the body. Parenchymal fusion and the presence of good excretory function make the supernumerary kidneys even rarer as many of the reported cases are rudimentary organs. We present a 35-year-old man with a sudden onset of agonizing right flank pain and tenderness. Radiologic assessment with computed tomography showed bilaterally fussed and malrotated supernumerary kidneys with an obstructive stone and good contrast uptake. The patient has four fully functional kidneys (two on each side) with their own arterial supply, venous drainage, collecting system and incompletely duplicated ureters bilaterally. An open pyelolithotomy is performed to relieve pain and hydronephrosis. The patient's symptoms improved after surgery and during subsequent follow-up.
