ArticleAnnals of surgical oncology2025
Laparoscopic Approach to a Rare Hypervascular Renal Vein Tumor: A Case of Anastomosing Hemangioma.
Article in Annals of surgical oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Laparoscopic Minimally Invasive Approach for Left Paracaval Retroperitoneal Schwannoma.Annals of surgical oncology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAnastomosing hemangioma (AH) is a rare benign vascular neoplasm that histologically mimics angiosarcoma and has been reported in various sites, including the kidney, liver, adrenal gland, bladder, and retroperitoneum. When arising from the renal vein or its junction with the inferior vena cava, AH is exceptionally uncommon, with only a few cases described. Its hypervascular nature often leads imaging to suggest malignancy, making preoperative differentiation from angiosarcoma challenging. Surgical excision remains both diagnostic and curative, with laparoscopic resection feasible in selected cases and specialized centers.
methodsWe report the case of a 77-year-old man with an incidentally discovered retroperitoneal mass arising from the left renal vein and extending toward the inferior vena cava. Imaging revealed a well-enhancing hypervascular lesion suggestive of malignancy. After multidisciplinary evaluation, surgical excision without renal vein reconstruction was planned, supported by literature evidence on the safety of renal vein ligation without reconstruction. Postoperative Doppler ultrasound at 72 h confirmed adequate venous drainage via preserved tributary vessels. Follow-up at 6 months, including renal function tests and Doppler ultrasound, showed no renal dysfunction or morphologic abnormalities.
resultsThe accompanying video demonstrates step-by-step laparoscopic dissection and resection of the lesion, highlighting key anatomic landmarks, vascular control strategies, and techniques to minimize intraoperative bleeding. Histopathologic analysis revealed anastomosing capillary-sized vessels lined by bland endothelial cells, consistent with AH, with immunohistochemistry positive for CD34, SMA, and ERG.
conclusionsAH should be considered in the differential diagnosis of retroperitoneal vascular tumors. In cases involving major vascular structures, preoperative biopsy is often unfeasible, and surgical excision becomes necessary for definitive diagnosis and treatment. Laparoscopic resection can be performed safely in high-volume centers, offering the benefits of minimally invasive surgery along with excellent oncologic and functional outcomes.
Indexed as
Identifiers
40721964What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.