What is anastomosing hemangioma?
Anastomosing hemangioma is a rare neoplastic vascular lesion, histologically mimicking angiosarcoma. It is predominantly composed of irregularly anastomosing sinusoidal-like spaces lined by endothelial cells with minimal atypia, a frequently hobnail morphology, and minimally invasive margins.
What is a hemangioma of the kidney?
Renal hemangioma is an uncommon benign tumor which usually causes painless or painful gross hematuria. Its preoperative diagnosis is extremely difficult or even impossible. We experienced three cases of renal hemangioma, located mainly at the pelvocalyceal junction or in the inner medulla.
Can you have a hemangioma on your kidney?
Hemangioma of kidney is a rare benign tumor. Although it may be clinically silent, their main symptom is hematuria, sometimes profuse and relapsing. We report two such cases which presented with episodes of hematuria and were clinically and radiologically diagnosed as transitional cell carcinoma.
What is a vascular lesion?
Vascular lesions are relatively common abnormalities of the skin and underlying tissues, more commonly known as birthmarks. There are three major categories of vascular lesions: Hemangiomas, Vascular Malformations, and Pyogenic Granulomas.
Is cavernous hemangioma cancerous?
A liver hemangioma (he-man-jee-O-muh) is a noncancerous (benign) mass in the liver made up of a tangle of blood vessels. Also known as hepatic hemangiomas or cavernous hemangiomas, these liver masses are common and are estimated to occur in up to 20% of the population.
What is epithelioid hemangioendothelioma?
Epithelioid hemangioendothelioma, or EHE, is a rare cancer that grows from the cells that make up the blood vessels. This cancer can occur anywhere in the body with the most common sites being the liver, lungs, and bone.
What is the cause of a hemangioma?
Hemangiomas of the skin develop when there’s an abnormal proliferation of blood vessels in one area of the body. Experts aren’t sure why blood vessels group together like this, but they believe it’s caused by certain proteins produced in the placenta during gestation (the time when you’re in the womb).
Is a hemangioma vascular?
In brief, hemangiomas are vascular tumors that are rarely apparent at birth, grow rapidly during the first 6 months of life, involute with time and do not necessarily infiltrate but can sometimes be destructive.