31-P mr spectroscopy of a leg lymphangiosarcoma.

In a 64 year old man with a large, low grade lymphangiosarcoma of the right thigh, we correlated the results of in vivo 31-P-magnetic resonance spectroscopy (MRS), proton magnetic resonance imaging (MRI), and digital subtraction (DSA) with the pathologic specimen and histology. The 31-P MRS spectra of the tumor showed well-resolved peaks as follows: intense PCr (phosphocreatine), PDE (phosphodiester) and Pi (inorganic phosphate), and low PME (phosphomonoester). The Pi peak revealed an intratumor pH of 6.

31-P MR spectroscopy and MRI of a testicular non-Hodgkin lymphoma recurrence to monitor response to irradiation. A case report.

Purpose: To monitor the metabolic changes during the radiation treatment of a recurrence of a high malignant non-Hodgkin lymphoma (NHL) of the left testis.

Patients And Methods: A 76-year old patients who presented a diffuse centroblastic high malignant NHL recurrence in the left scrotal sac was examined with 31-P magnetic resonance spectroscopy (MRS) and proton magnetic resonance imaging (MRI) before, during and after megavoltage radiotherapy to a total dose of 56 Gy.

Results: The 31-P MRS spectrum of the tumor showed before starting irradiation, intensive phosphomonoester (PME) and phosphodiester (PDE) signals that overlapped the inorganic phosphate (Pi) signal.

Efficacy and benefit of mediastinal computed tomography as a selection method for mediastinoscopy.

In 95 consecutive patients with proven or suspected bronchial carcinoma, computed tomographic evaluation of the upper mediastinum for N2 disease was performed prospectively. Patients with positive results underwent mediastinoscopy. Patients with perinodal N2 or N3 disease at mediastinoscopy were not considered candidates for operation.

[Specific detection of various stages of Osler's disease of the brain using high field magnetic resonance tomography (1.5 Tesla)].

MR is a sensitive noninvasive examination method for diagnosing parenchymatous cryptic arteriovenous malformations and sequels of cerebral haemorrhage. In a patient with recurring nosebleed and brain stem syndrome eleven so-called cryptic arteriovenous malformations or their haemorrhage sequels were diagnosed via magnetic resonance tomography. Basing on these specific findings, nosebleeding, and a positive family anamnesis, the findings could be classified as belonging to manifestations of Osler's disease (hereditary haemorrhagic telangiectasia).

Magnetic resonance imaging of renal transplants: its value in the differentiation of acute rejection and cyclosporin A nephrotoxicity.

The purpose of this study was to determine the value of magnetic resonance imaging (MRI) in the differentiation of acute rejection and cyclosporin A nephrotoxicity in renal transplant kidneys. Fifty-six magnetic resonance examinations in 46 patients were prospectively and independently evaluated by two radiologists. MRI was performed with a 0.