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Query: UMLS:C0027651 (tumor)
 685,946 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Before extinction of an epileptogenic focus exclusion of an intracranial tumor or an angioma by EEG, isotope and contrast medium diagnosis must be attempted. A case history is presented of a patient in whom a malignant glioma was discovered 5 years after stereotactic treatment for epilepsy.
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PMID:Surprise finding 5 years after stereotactic amygdalotomy. 36

CT-scans of 29 histologically proven cavernous hemangiomas were evaluated with respect to their location, shape, delineation from surrounding tissue, contrast-enhancement, and secondary changes of the bony orbit. Whenever a round or oval tumor, located in the outer upper muscle cone, sharply delineated from surrounding tissue, unattached to optic nerve and ocular muscles, spares a small triangular space in the orbital apex, it is in all probability a cavernous hemangioma. Evaluation of the tumors shape and its separation from surrounding tissues requires imaging in multiple sections in two planes oriented, if possible, at right angles. -- Changes in position of the optic nerve and eye muscles in different directions of gaze demonstrated by CT rule out significant tumor-attachments. The portion of the intraconal space least affected by optic nerve shifts and muscle contractions during eye movements, as demonstrated by CT, is the upper outer quadrant, the site preferred by the mobile tumor. -- Tumors which cannot be differentiated from cavernous hemangiomas by CT-criteria are rare usually benign. Reports of rare examples of well delineated or encapsulated malignant intraconal lesions indicate the possibility -- however remote -- of mistaking a malignant tumor for a cavernous hemangioma by CT.
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PMID:[Ct-criteria of orbital hemangiomas and their importance in differential diagnosis of intraconal tumors (author's transl)]. 39 92

Four patients with massive cavernous hemangioma of the liver were treated with 6 Mev X-ray, and favorable results were obtained in 3. Patient 1 was treated with a total tumor dose of 940 rads without response. The 2nd patient was given a total tumor dose of 1900 rads over 54 days, with a daily dose of 50 to 100 rads. Although the hemangioma regressed after treatment, the response was transient. A total tumor dose of 2940 rads was given over 41 days with a daily dose of 100 to 200 rads as a second course, and the hemangioma regressed with no sign of reenlargement. Patients 3 and 4 were given 150 to 200 rads every other day to a total of about 3000 rads, with a satisfactory response. Follow-up studies showed the latter 3 patients to be well 8, 5, and 4 years after radiotherapy, respectively.
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PMID:Radiotherapy of hemangioma cavernosum of the liver. 40 62

Prostaglandin E1 (PGE1) is a potent vasodilator. The value of this agent as an adjuvant in angiography of tumors of the extremities was evaluated in 10 patients. Except in one case involving a hemangioma, the diagnostic information concerning tumor vascularity and delineation of the extent of disease decreased after the use of PGE1. The visualization of small normal muscular arteries was improved. Therefore, the effect of PGE1 may be to preferentially increase the blood flow in normal tissues relative to the tumor. PGE1 seems to be of little value in enhancing the angiographic demonstration of neoplasms of the extremity.
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PMID:Prostaglandin E1 (PGE1) in angiography of tumors of the extremities. 41 21

Choroidal hemangioma, a benign vascular tumor of the choroid, can frequently develop an effusive secondary retinal detachment. When such retinal detachment involves the macula, reduction in central vision occurs. Fluorescein angiography and radioactive prosphorus tests are helpful in accurately diagnosing choroidal hemangioma. Transscleral cryopexy, freeze-thaw-refreeze method, results in complete destruction and scarring of the choroidal hemangioma. Following treatment, subretinal fluid disappears, the macula becomes reattached, and central vision is restored.
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PMID:Choroidal hemangioma: Response to cryotherapy. 42 Apr 70

A case of intracranial cavernous hemangioma displaying feeding arteries, tumor stains, and venous pools is presented. Tumors of this type may simulate avascular masses on angiography; however, when surgically excised, they bleed profusely. A correct preoperative diagnosis can help avoid unnecessary incisions. Prolonged injection angiography clearly depicts the tumors and their venous pools, which may be pathognomonic of cavernous hemangiomas.
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PMID:Prolonged injection angiography for diagnosing intracranial cavernous hemangiomas. 42 74

Capillary and cavernous hemangiomas are often grouped together as if they were modulations of the same entity. To clarify this nosologic question, three capillary hemangiomas in children and four cavernous hemangiomas in adults were studied by transmission electron microscopy. The capillary hemangiomas consisted of two variably admixed zones, solid cellular zones and zones with open vascular lumens. However, both zones had similar organization. Each vascular unit was composed of endothelial cells and pericytes, which persisted in a tumor three years after its clinical appearance. Macrophages and degenerating cells were found in the interstitium and may be related to the clinical feature of partial spontaneous regression. The cavernous hemangiomas had much larger lumens, and wider and more heavily collagenized trabeculae. The vascular walls were created by multilaminar smooth muscle cells. Therefore, capillary hemangioma is completely different from cavernous hemangioma, which resembles a venous tumor.
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PMID:Ultrastructural comparison of capillary and cavernous hemangiomas of the orbit. 44 47

The clinical and pathological data of 66 patients with orbital cavernous hemangioma are presented. This tumor occurs in females more frequently than in males, and has its peak incidence in early middle age. Visual disability results from a high degree of relative hyperopia or from optic-nerve compression. Postural or temporal variation is proptosis is not characteristic. Multiple cavernous hemangiomas are rare, but may occur simultaneously or separated by long intervals. In this series, incompletely excised lesions did not cause recurrent proptosis. Relative hyperopia may persist, in spite of complete removal of the tumor. Improved preoperative localization with modern techniques appears to be reducing the morbidity associated with surgical excision of the lesion. A local hemodynamic disturbance may initiate proliferation of vascular channels that undergo progressive ectasia. Growth of the lesion may occur intrinsically by the budding-off of capillary channels from cavernous spaces into the interstitium. Clinical and pathological findings fail to demonstrate any relationship between this lesion and capillary hemangioma of childhood.
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PMID:Cavernous hemangioma of the orbit. 44 30

An unusual hemangioma of the face, found in a 7-year-old girl in the masticator space and consisting of multiple lobes, is reported. Direct angiography was effective in clarifying the space occupied by the tumor. It was removed through a combined approach, using both temporal and oral incisions, with almost no bleeding.
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PMID:Unusual facial hemangioma. 45 Oct 61

In a five year old boy who had intermittent knee joint swelling, angioma like venous dysplasia of synovial membrane was diagnosed by arthroscopic examination. The arthroscopic diagnosis was the indication for arthrotomy. The suprapatella pouch of the knee joint contained a blue grape like tumor. Angiomalike venous dysplasia of the synovialmembrane can histologically be separated from other angiomas of the inner joint capsule and angiomalike alterations in other joint diseases. Arthroscopy should be performed if within half a year monarticular intermittent joint swelling in childhood can not be diagnosed.
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PMID:[Angioma like dysplasia of synovial membrane with phlebectasia causing palindromic joint swelling in childhood (author's transl)]. 46 32


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