Anastomosing hemangioma simulating renal cell carcinoma

Silva, Mariana Athaniel; Fonseca, Eduardo Kaiser Ururahy Nunes; Yamauchi, Fernando Ide; Baroni, Ronaldo Hueb

doi:10.1590/s1677-5538.ibju.2016.0653

Cited by 13 publications

(4 citation statements)

References 4 publications

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“…In this report, the lesions showed uniform enhancement both peripherally and centrally in the arterial phase, which persisted in the delayed phase. Either way, the enhancement pattern of MRI was similar to that of CT, with clear heterogeneous enhancement in the arterial phase and persistent hyperenhancement in the portal and delayed phases (12,14,15). In our case, the lesion showed heterogeneous septal enhancement in the arterial phase and persisted peripherally and centrally in the portal phase.…”

Section: Discussionsupporting

confidence: 75%

“…However, the imaging findings of AH are not specific and are similar to most benign lesions. On noncontrast-enhanced CT, the AH showed lobular lesions with soft-tissue attenuation, and on contrast-enhanced CT showed heterogeneous solid lesions with persistent enhancement (10,12). On noncontrast-enhanced MRI, the AH presented as a round, well demarcated T1-hypointense and T2-hyperintense lesion, while on contrast-enhanced MRI, it presented with strong peripheral enhancement in the arterial phase, which persisted in the delayed phase without central enhancement (13).…”

Section: Discussionmentioning

confidence: 97%

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Primary anastomosing hemangioma as a preoperative diagnostic mimicker of retroperitoneal cavernous hemangioma: A case report

Ishido,

Tajima,

Meguro

et al. 2024

Oncol Lett

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Anastomosing hemangioma (AH) is rare and a newly recognized variant of capillary hemangioma that is mostly found in the genitourinary tract. Additionally, AH is sometimes difficult to diagnose without pathological specimens. It is difficult to diagnose preoperatively due to the lack of specific clinical and radiologic appearance. The present report describes the imaging features from a radiological perspective and outlines the clinicopathologic features and treatment options. A 67-year-old woman was referred to Dokkyo Medical University Saitama Medical Center (Koshigaya, Japan) for a retroperitoneal tumor that was identified at a medical checkup 4 years prior. The patient had no symptoms, no abnormal physical signs and no past medical or specific family history. Routine blood tests were all within the normal ranges. A nonenhanced CT scan showed a circular, homogenous, well-circumscribed retroperitoneal tumor that was ~32x23 mm in size, between the abdominal aorta and the inferior vena cava, and just below the left renal vein. On a contrast-enhanced multidetector CT scan, the tumor showed heterogeneous septal enhancement in the arterial phase and persistent enhancement in the portal phase. The tumor was diagnosed as a benign neurogenic tumor or a retroperitoneal cavernous hemangioma at the time, and the patient was intended to be followed up at the outpatient clinic. However, it gradually increased to a maximum diameter of 35 mm over 4 years. Finally, it was completely resected by open laparotomy and pathologically diagnosed as AH. Retroperitoneal hemangioma is extremely rare in adulthood and has been confirmed in only 1-3% of all retroperitoneal tumors. To the best of our knowledge, only 6 cases of para-aortic AH have been reported. The incidence of this variant is very low. However, AH may be included in the differential diagnosis when a slowly progressing heterogeneous mass appears in the para-aortic region that exhibits a CT-enhanced pattern similar to a typical cavernous hemangioma.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionmentioning

confidence: 97%

Primary anastomosing hemangioma as a preoperative diagnostic mimicker of retroperitoneal cavernous hemangioma: A case report

Ishido,

Tajima,

Meguro

et al. 2024

Oncol Lett

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“…Overwhelming evidence suggests that AH exhibits benign biologic behavior ( 15 ). Furthermore, the management and surveillance of AH remain challenging ( 16 ). A better understanding of the growth conditions will help guide decisions concerning the optimal treatment of AH ( 17 ).…”

Section: Discussionmentioning

confidence: 99%

A growing liver anastomosing hemangioma

Ma¹,

Cao²,

Wang³

et al. 2023

Quant Imaging Med Surg

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“…Some cases demonstrate avid peripheral nodular enhancement highly suggestive of RCC [20]. Features of AH on MRI are not well-established, but some studies report hyperintensity on T2-weighted images with variable enhancement [38]. Overall, as the radiologic appearance may mimic malignancies, particularly hypervascular RCC, preoperative diagnosis of AH may not be possible on imaging.…”

Section: Anastomosing 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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Anastomosing hemangioma simulating renal cell carcinoma

Cited by 13 publications

References 4 publications

Primary anastomosing hemangioma as a preoperative diagnostic mimicker of retroperitoneal cavernous hemangioma: A case report

Primary anastomosing hemangioma as a preoperative diagnostic mimicker of retroperitoneal cavernous hemangioma: A case report

A growing liver anastomosing hemangioma

Vascular Neoplasms and Related Lesions of Kidney

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