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J Ancer

Publications and source records attributed to J Ancer.

4 recordsLinked to original sources
PubMed1992

[Pattern of vascular aging of the postmenopausal ovary].

It has been established that the blood vessels during post-menopause show progressive changes that consist in thickening of the vascular wall with the corresponding diminution of the lumen, but the material where such thickening takes place, is unknown, so 70 ovaries, 35 of them post-menopausal and 35 of reproductive cycle, were analyzed histologically and by special staining techniques. In the post-menopausal ovary it was found that the arteries, veins and arterioles had a lumen diminution to 88.5%; 94.2% had a thickened wall from glucogen and collagen which was increased in 65.7% of the cases; besides, elastic fibers of blood vessels were duplicated in 52.9% of post-menopausal ovaries. This confirms our hypothesis in that vascular aging in the post-menopausal ovary, includes the thickening of blood vessels from glucogen and collagen stores, so as a consequence a diminished lumen, is observed.

Aging↗
PubMedDate not supplied

MR imaging in neurocysticercosis: a study of 56 cases.

We reviewed the MR findings in 56 patients with neurocysticercosis (NCC). MR findings were correlated with other neuroradiologic findings in 40 cases, with histopathologic studies in 15 surgically treated patients, and with autopsy findings in one case. Active NCC was characterized by the presence of a cyst in the brain parenchyma (53%) or in an intraventricular subependymal (22%) or subarachnoid (10%) location. The cysticercus appeared as a vesicle with a high-intensity signal nodule that corresponded to the scolex. Cyst mobility was observed in two intraventricular cases. Periventricular edema and ependymitis appeared as high-intensity signal on T2 sequences. Inactive NCC (15%) was characterized by calcifications (signal void on T1 and T2 sequences), aqueductal stenosis, and tissue thickness in the basal meninges. Degenerative cysticercus appeared on MR as an irregular vesicle without a scolex. Active NCC was better detected with MR than with CT (85% vs 21%), whereas inactive forms were observed better with CT (23% vs 14%). We conclude that MR is sensitive in the diagnosis of active NCC and may be useful in evaluating the degenerative changes in the parasite that occur as a result of natural degeneration, host response, or medical therapy.

Adolescent↗