Renal Capillary Hemangioma Mimicking Urothelial Carcinoma, A Case Report and Review of the Literature

Geramizadeh, Bita; Shams, Nadereh; Iranpour, Pouya; Rajabi, Mohammad

doi:10.30699/ijp.14.2.175

Cited by 6 publications

(7 citation statements)

References 15 publications

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“…At present, most patients with renal venous malformation have no obvious symptoms, and they are only found by chance during physical examination. 13 A few patients may have hematuria (microscopic hematuria or gross hematuria), mostly intermittent hematuria, which is caused by the rupture of vascular epithelium of renal pelvis and calyceal mucosa, and blood clots may appear in patients with a large amount of hematuria, even endangering life. 7 Some patients also have low back pain (slight pain or renal colic), which is caused by blood clot blocking the ureter.…”

Section: Discussionmentioning

confidence: 99%

“…At present, most patients with renal venous malformation have no obvious symptoms, and they are only found by chance during physical examination. 13 A few patients may have hematuria (microscopic hematuria or gross hematuria), mostly Figure 1. CTU: A plain scan showed that the left renal pelvis and calyces showed a slightly high-density shadow, with a CT value of about 62HU, a size of about 2.6 cm*1.5 cm, and blurred edges, mainly in the middle and lower poles of the renal pelvis and calyces B and C. Enhanced scan showed that mild-to-moderate enhancement was found at the edge of the lesion; after enhancement, the left renal cortex in the lower pole was diffusely low enhanced.…”

Section: Discussionmentioning

confidence: 99%

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Renal venous malformation misdiagnosed as carcinoma: A report of one case and the review of literature

Zhang,

Wang,

Yang

2023

Int J Immunopathol Pharmacol

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The present study reports the clinical data of a patient with renal venous malformation misdiagnosed as carcinoma. CT revealed hematocele in the left renal pelvis and ureter. CTU: the left renal pelvis and calyces showed a slightly high density shadow, a size of about 2.6 cm*1.5 cm, and mild-to-moderate enhancement was found at the edge of the lesion. Enhanced MR showed that irregular mass abnormal signal was observed in the lower calyx of the left kidney and the lesions were cast, with short T1 and slightly long T2 signals. The secondary bleeding or mucus of low-grade malignant tumor became suspicious. The patient underwent cystoscopy and left ureteroscopy under general anesthesia on December 3, 2021. Bloody urine can be seen on the left side, and multiple blood clots in the left renal pelvis can be detected. After washing, dark red bloody necrotic substances can be seen. Pathology suggests that renal venous malformation, accompanied by bleeding and thrombosis, is located in the renal medulla, involving the renal calyx, rupture and bleeding of the renal calyx, and obvious local bleeding of surrounding renal tissue. Follow-up for more than 1 year showed that the patient's condition was stable. When patients have renal colic with hematuria, enhanced CT suggests that renal mass is mild-to-moderate continuous enhancement, enhanced MRI suggests short T1 and long T2, considering that the mass may be accompanied by bleeding, and ureteroscopy suggests that dark red bloody necrotic substances should be considered in the diagnosis of renal venous malformation.

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Section: Discussionmentioning

confidence: 99%

“…At present, most patients with renal venous malformation have no obvious symptoms, and they are only found by chance during physical examination. 13 A few patients may have hematuria (microscopic hematuria or gross hematuria), mostly Figure 1. CTU: A plain scan showed that the left renal pelvis and calyces showed a slightly high-density shadow, with a CT value of about 62HU, a size of about 2.6 cm*1.5 cm, and blurred edges, mainly in the middle and lower poles of the renal pelvis and calyces B and C. Enhanced scan showed that mild-to-moderate enhancement was found at the edge of the lesion; after enhancement, the left renal cortex in the lower pole was diffusely low enhanced.…”

Section: Discussionmentioning

confidence: 99%

Renal venous malformation misdiagnosed as carcinoma: A report of one case and the review of literature

Zhang,

Wang,

Yang

2023

Int J Immunopathol Pharmacol

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“…However, the specific site of hemangioma is prone to serious complications, such as an intracranial hemangioma rupture causing intracerebral hemorrhage and an intestinal hemangioma rupture causing gastrointestinal hemorrhage. According to the published literature, there have been less than 40 cases of renal capillary hemangioma reported ( 12 ). There have also been reports of renal rupture and bleeding ( 4 ).…”

Section: Discussionmentioning

confidence: 99%

Case report: Capillary hemangioma in the renal hilum mimicking paraganglioma

Jiang

Liu

2022

Front. Oncol.

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BackgroundCapillary hemangioma is a common benign tumor in children. Its presence in the kidney is rare, and there have been only case reports in the English literature. Herein, we report a special case of capillary hemangioma located in the renal hilum, which was suspected to be a paraganglioma.Case presentationA 44-year-old woman had an irregular mass in the right hilar region. She had a history of hypertension for 3 years, and her 24-hour urinary norepinephrine was slightly high (41.53 µg, normal range: 16.69-40.65 µg). Abdominal MRI revealed a mass in the renal hilum measuring approximately 4.8×4.0×3.2 cm, slightly low signal intensity on T1WI, and very high signal intensity on both T2WI and DWI. The multiphase enhanced scan showed that the tumor had obvious enhancement with a central hypointense area. Therefore, paraganglioma was initially diagnosed. Phenoxybenzamine was administered over the next 2 weeks. She performed laparoscopic right hilar area tumor resection, and the kidney was preserved. Unexpectedly, the final pathology report was capillary hemangioma.ConclusionsCapillary hemangioma in the renal hilum is extremely rare. Surgery is the first choice to reduce the risk of compression symptoms and to rule out malignancy with respect to an undefined growing retroperitoneal mass. In addition, renal-sparing surgery should be preferred.

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“…Occasionally, renal hemangiomas are seen in the context of end-stage renal disease, polycythemia, or hypertension [5][6][7][8][9]. Rare cases arising in the vicinity of RCCs have been reported, as well as cases with syndromic associations such as Klippel-Trenaunay and Sturge-Weber disease [8,[10][11][12][13][14].…”

Section: Hemangiomamentioning

confidence: 99%

“…Immunohistochemical analysis using cytokeratins, PAX8, CD10, and CAIX should resolve the distinction between RCC and hemangioma. Other neoplasms that should be ruled out include angiosarcoma (which typically shows increased cytologic atypia, mitotic activity, and necrosis), anastomosing hemangioma (which usually displays lobular growth of sinusoidal vascular spaces with prominent intervening stroma), and angiomyolipoma (especially as entrapped adipocytes may be seen in hemangiomas, producing an angiomyolipoma-like appearance; immunohistochemistry with melanocytic markers usually easily distinguishes these two entities) [12,15].…”

Section: Hemangiomamentioning

confidence: 99%

Vascular Neoplasms and Related Lesions of Kidney

Lin¹,

Ro²

2020

ann urol oncol

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Vascular tumors arising in the kidney are distinctly uncommon occurrences and have not been well-characterized in the literature; most cases have been documented in single reports or small case series. These tumors often exhibit nonspecific clinical and radiologic features and may mimic malignant epithelial tumors such as renal cell carcinoma (RCC) on imaging studies, necessitating nephrectomy with pathologic examination for definitive diagnosis. In addition, since primary renal vascular tumors are rare and infrequently encountered in surgical pathology specimens, they are often not considered in the differential diagnosis and therefore may be systematically under-diagnosed. In this review, we discuss the clinical and morphologic features of benign, borderline, and malignant vascular neoplasms and related lesions arising in the kidney, with a focus on recent, clinically relevant advances in imaging, histopathologic diagnosis, and treatment.

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Renal Capillary Hemangioma Mimicking Urothelial Carcinoma, A Case Report and Review of the Literature

Cited by 6 publications

References 15 publications

Renal venous malformation misdiagnosed as carcinoma: A report of one case and the review of literature

Renal venous malformation misdiagnosed as carcinoma: A report of one case and the review of literature

Case report: Capillary hemangioma in the renal hilum mimicking paraganglioma

Vascular Neoplasms and Related Lesions of Kidney

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