A PIGMENTED FUNDUS LESION WITH PSEUDOHYPOPYON AND SUBRETINAL FLUID RESEMBLING UNILATERAL RETINAL PIGMENT EPITHELIUM DYSGENESIS.

Purpose: To describe multimodal imaging findings in a patient with a rare, symptomatic fundus lesion arising from the retinal pigment epithelium.

Methods: Case report.

Results: A 36-year-old woman presented with photopsia in her left eye.

Assessment of tumor oxygenation in human cervical carcinoma by use of dynamic Gd-DTPA-enhanced MR imaging.

Increased knowledge of the physiological basis behind the signal enhancement in tumors during dynamic contrast-enhanced magnetic resonance (MR) imaging may be useful in development of predictive assays based on this technique. In the present work, the relative signal intensity (RSI) increase in gadopentetate dimeglumine (Gd-DTPA)-enhanced MR images of patients with cervical carcinoma was related to tumor perfusion, vascular density, cell density, and oxygen tension (pO(2)). The patients were subjected to MR imaging before the start of treatment (N = 12) and after two weeks of radiotherapy (N = 8).

Intra- and intertumor heterogeneity in blood perfusion of human cervical cancer before treatment and after radiotherapy.

Knowledge of the intratumor heterogeneity in blood perfusion may lead to increased understanding of tumor response to treatment. In the present work, absolute perfusion values, in units of ml/g.min, were determined in 20 tumor subregions of patients with cervical cancer before treatment (n = 12) and after 2 weeks of radiotherapy (n = 8), by using a method based on contrast-enhanced magnetic resonance imaging.