Biomedical subjects
Publications and source records attributed to C Nunnensiek.
Single-agent carboplatin chemotherapy has recently been introduced into the therapy of limited seminoma. Because of poor compliance due to Down's syndrome we successfully treated a 32-year-old man with relapsed stage-IIIB seminoma with a dose-modified carboplatin monotherapy schedule leading to complete remission even after a follow-up of 4 years.
Two cases of lymphoma-associated acquired C 1-inhibitor deficiency are described. In both patients, C 1-inhibitor deficiency and related symptoms preceded the diagnosis of the underlying neoplasm by several months. C 1-inhibitor deficiency was most likely due to consumption following immunocomplex formation. In both patients, a close relationship between low levels of C 1-inhibitor and tumor relapse was observed during follow-up. These findings indicate that measurement of C 1-inhibitor and complement factor C4 can be used as markers of disease activity in affected patients.
A man in his forties was operated on for testicular cancer on the right-side with subsequent radiotherapy. Two years later, another tumor was found on the opposite side and surgically removed, followed by polychemotherapy. In the follow-up period, CT scanning and ultrasound showed large abdominal masses which were suspected to be metastases. Before initiating four cycles of chemotherapy, we checked their nature by Doppler sonography and found them to be recently developed abdominal varices due to an alcoholic liver cirrhosis. We were able to demonstrate that Doppler sonography can provide further information and is easy to use.
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Involvement of one or both gonads in postpuberty mumps is common and can often lead to infertility. Our report discusses the course of disease of a patient with acute mumps orchitis. Only 2 days after administration of interferon, clinical symptoms had drastically improved, and the infection subsided without any after-effects. We therefore recommend immediate interferon therapy, as soon as postpuberty mumps manifests, to prevent testicular atrophy and resulting infertility.
Human chorionic gonadotropin (beta-hCG) and alpha-fetoprotein (AFP) are widely established specific and sensitive tumor markers for nonseminomatous testicular cancer. In 106 patients with pure seminoma, a highly sensitive method detected beta-hCG both before and repeatedly during therapy. The low detection limit of the test (0.3 IU/l) coincided with the 95 percentile of a group of 60 healthy blood donors. Its 100 percentile of < 1.0 IU/l was applied as the upper limit of the normal range. In 30.2% of our patients with pure seminoma, elevated beta-hCG levels were noted prior to orchiectomy. The levels returned to normal in 76% of these patients thereafter, and in 34% after additional irradiation or chemotherapy. During an observation period of 2-84 months, all beta-hCG-positive patients were in complete remission. Prior to semicastration, 1 patient showed extremely high beta-hCG levels, while in another patient, beta-hCG and AFP were elevated simultaneously. In both cases, tumor marker levels did not seem to agree with the histology of 'pure seminoma' and rather suggested the presence of nonseminomatous tumor cells. Increased AFP levels contradict the presence of a pure seminoma and indicate a nonseminomatous testicular tumor. The same holds true for strongly elevated beta-hCG levels, whereas levels of up to 200 IU/l correlate with the diagnosis of pure seminoma.
Bladder tumors were staged preoperatively before and/or after M-VEC poly-chemotherapy using transrectal ultrasonography and magnetic resonance imaging in 46 patients. The resultant findings were each compared with histomorphologic results. The sensitivity of both methods compared with pathohistology was 88%. Using this technique, the degree of tumor invasion of the bladder wall could be evaluated and the appropriate therapy selected. Further applications included the monitoring of transurethral resection determine its adequacy as a treatment modality.
We report a case of spontaneous splenic rupture caused by signet ring cell carcinoma of the urinary bladder. Rupture of the spleen usually stems from trauma and only rarely from solid tumor metastasis. Early diagnosis by ultrasound is essential since mortality is high without prompt splenectomy.
Seven years ago, a now 25-year-old man was found to have Crohn's disease of the terminal ileum as well as of the transverse and sigmoid colon. Despite treatment with both corticosteroids and mesalazine the disease progressed and led to almost complete stenosis of the lumen of the sigmoid colon so that surgical intervention was planned. But because immunohistological examination of the small and large intestinal mucosa had demonstrated herpes simplex virus (HSV I + II) DNA, additional treatment with acyclovir appeared worth-while. The morphological and clinical findings indeed changed decisively, obviating surgery. If a virus infection is found to be a pathogenetic co-factor in a case of Crohn's disease, a therapeutic trial with a suitable antiviral agent seems reasonable.
Follow-up serial computed tomographic scans of 124 patients treated for testicular cancer with either radiotherapy or retroperitoneal lymphadenectomy alone or in combination with chemotherapy were evaluated. Thymic enlargement occurred three to 20 months after initiation of treatment in 15 of the 124 patients. Thymic enlargement could histopathologically be demonstrated in seven patients as true hyperplasia. One of these seven patients however had evidence of metastatic disease with thymic infiltration by a malignant teratoma. Thus it may be impossible to distinguish benign thymus hyperplasia from tumor-infiltration on the basis of ct information alone and sternotomy may be required. No severe defect of cellular immunity could be found. There is no specific constellation of lymphocytic markers in peripheral blood which could indicate true thymic hyperplasia.
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BACKGROUND/AIMS: The etiology and pathogenesis of ulcerative colitis and Crohn's disease remain unclear, so that exact causal therapy is not yet possible. In our UC and CD patients, viral infections, particularly of the upper respiratory tract, aggravated the underlying disease. This had led us to use in-situ hybridization to investigate intestinal mucosa for viral agents such as HSV I + II- and Epstein-Barr virus DNA. We found these DNA in the cell nuclei in the surface and glandular epithelia of the affected mucosa of the small intestine and the colon. These findings indicated that viruses may exacerbate these inflammatory bowel diseases. METHODOLOGY: Over a period of 1-4.7 years, we treated 16 patients aged 25-65 with Crohn's disease (12 patients) or ulcerative colitis (four patients). In 14 patients, inflammatory bowel disease had been diagnosed years before (mean, 15.3 years). When we started therapy, 75% of the patients with Crohn's disease had extra-intestinal manifestations; and the CDAI after Best averaged considerably above 150. All patients had been taking either prednisone or prednisolone and/or 5-ASA or SASP and/or azathioprine or metronidazole for many years. Using PCR, mucosal specimens of the small intestine and/or the colon were tested for EBV-, HSV I + II, HHV6- and CMV DNA. In 12 of the 16 patients. EBV- and/or HHV6 DNA were found in the affected mucosa. Since interferon alpha administration has proven effective in chronic hepatitis-B therapy, we decided to administer interferon alpha 2a (13,46,47,55). After stopping the above-mentioned basic therapies, we commenced treatment with 6 million units of interferon alpha 2a subcutaneously 3 times per week for at least six months. Four of the patients showed no signs of improvement, and their therapy was stopped after three months. For the others, therapy was continued until patients were clinically symptom-free and viral DNA could no longer be traced in their mucosal biopsies. RESULTS: With interferon therapy, 12 of the 16 patients showed slow but continual improvement. Particularly impressive was the remission of the extra-intestinal manifestations, which did not recur in any patient during interferon therapy. Four patients did not show any improvement, and the clinical symptom of diarrhea continued. Two patients with ulcerative colitis suffered relapses three and four years later, after severe bouts of para-influenza of the upper respiratory tract. In these two patients, EBV- and HHV6 DNA was found in the inflamed mucosa of the colon. Renewed therapy with interferon alpha 2a successfully cleared up the inflammation. The patient group needed an average of eight weeks to become clinically symptom-free, and an average of six months to achieve complete virus elimination in the pathologically altered mucosa. CONCLUSIONS: For herpesvirus-associated ulcerative colitis and Crohn's disease, interferon alpha 2a treatment should be started as early as possible to prevent disease becoming chronic. Whether this kind of antiviral treatment will be as effective in the long term, and whether malignant transformation (herpes viruses are potential tumor inducers) will be delayed or prevented, are questions that can be answered only by future long-term studies.