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  • 1
    Electronic Resource
    Electronic Resource
    Oxford UK : Blackwell Science Ltd
    Histopathology 39 (2001), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Loss of CD30 expression in metastatic embryonal carcinoma: the effects of chemotherapy? Aims: CD30 has been shown to be consistently strongly expressed in embryonal carcinomas. Our aim was to examine changes in CD30 expression in embryonal carcinomas before and after treatment with chemotherapy. Methods and results: One hundred and eighteen retroperitoneal lymph node dissections from patients with metastatic germ cell tumours were reviewed. Seventeen contained embryonal carcinoma deposits. In nine cases, the matching pre-chemotherapy orchidectomy specimens were available. The cases were immunohistochemically stained for CD30. All nine pre- chemotherapy orchidectomy specimens showed embryonal carcinoma and stained strongly positively for CD30. However, only four out of nine of the matched post-chemotherapy retroperitoneal lymph node dissection specimens and a total of six out of 17 (35%) with embryonal carcinoma deposits stained for CD30. Ten seminomas were negative for CD30. Loss of CD30 did not appear to influence the relapse rate of the patients. Conclusions: Loss of CD30 expression occurs frequently in metastatic embryonal carcinomas after chemotherapy. This finding has implications in the use of CD30 in the diagnosis of metastatic non-seminomatous germ cell tumours and suggests that chemotherapy may alter the immunophenotype of embryonal carcinoma while retaining its characteristic histological appearances.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aims:  To define the frequency and distribution of intratubular embryonal carcinoma (IEC) in an attempt to shed light on the pathogenesis of non-seminomatous germ cell tumours (NSGCTs). Intratubular germ cell neoplasia of unclassified type (IGCNU) is common in NSGCT; however, IEC is rarely described.Methods and results:  Sixty-two germ cell tumours were reviewed. Immunochemistry for CD30, placental alkaline phosphatase (PLAP) and c-kit was performed. The distribution, immunohistochemistry and morphology of the intratubular neoplasia were noted. All cases showed widespread IGCNU with PLAP and c-kit staining. CD30 showed strong focal intratubular positivity in 20/31 NSGCTs, 1/29 seminomas and 1/4 mixed seminomas/NSGCTs. In 17 of these cases, the CD30+ tubules were not easily identified as IEC on routine stains. These tubules were scanty in number and c-kit was negative, though some showed patchy PLAP staining. The cells within these tubules differed morphologically from IGCNU.Conclusions:  IEC defined by CD30 positivity is not always easily identified on haematoxylin and eosin staining. We suggest that IEC is a common intermediate step between IGCNU and NSGCTs. The patchy and focal distribution of IEC suggests it may evolve quickly to invasive disease.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of oncology 9 (1998), S. 787-788 
    ISSN: 1569-8041
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1569-8041
    Keywords: high dose ; Hodgkin's lymphoma ; patterns ; relapse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background:High-dose chemotherapy has an established role inrecurrent or refractory Hodgkin's lymphoma (HL) although a significantproportion of patients subsequently relapse. This manuscript describes theclinical characteristics of such patients and documents their furthermanagement at two major UK cancer centres. Patients and methods:Between 1987 and 1996 one hundred patientswith recurrent or refractory HL received high-dose chemotherapy (HDCT) withautologous haematopoietic rescue. All had recurred within 12 months of initialtherapy or had two or more recurrences. Results:With a median follow-up of 2 years, 56 patients arecurrently progression-free. There were six treatment-related deaths. Onepatient died of pneumonia in remission. Thirty-seven patients have relapsed,intrapulmonary disease being seen for the first time in 53% andrecurrence at previous sites of disease in 81%. Following recurrence,therapy was determined by circumstances: either one agent at a time was used(single sequential approach) or multiagent chemotherapy was chosen. There wasa survival advantage for those who achieved a symptomatic response (13 vs. 4months median, P = 0.0001). A trend towards longer survival was seenfor those whose disease recurred beyond six months following high-dosechemotherapy and in those who received combination chemotherapy. Conclusions:These results confirm that HDCT with autologoushaematopoietic support is inadequate for about half the patients who receiveit for high-risk HL. Relapse in the site of prior disease is the most likelypattern with intrapulmonary disease for the first time occurring frequently.It is possible to administer further chemotherapy after failure of HDCT, andboth objective as well as subjective benefit can be achieved. A few patientsappear to get long-term benefit from further treatment.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1569-8041
    Keywords: low-dose continuous chemotherapy ; lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background:Although lymphoid malignancies are generallychemosensitive, relapse is common. The use of high-dose therapy can makesubsequent cytotoxic therapy intolerable. There is a need to develop regimenswith low acute toxicity which are suitable for use in patients post-high dosetherapy and following the failure of standard protocols. Patients and methods:Twenty-six patients with lymphomas, fifteenof whom had received high-dose therapy, were treated with a novel regimenconsisting of low-dose lomustine, chlorambucil, daily subcutaneous bleomycin,vincristine and methotrexate with dexamethasone on an eight-week cycle(LBCMVD-56). A median of three cycles was given. Results:The overall response rate at 12 weeks was 67%(21% complete remission (CR)) with a median overall survival of 13months. A symptomatic response was seen in 72%. Previous high-dosetherapy did not compromise the response rate. Toxicity was acceptable withgrade 3–4 haematological toxicity seen in 27% of cycles,gastrointestinal toxicity seen in 11% and pulmonary toxicity seen in8%. Thirty-one percent of patients required hospitalisation at somepoint during this treatment most commonly for neutropenic sepsis. Conclusions:LBCMVD-56 is an inexpensive, outpatient-based regimenwith low acute toxicity and a high response rate in this heavily pre-treatedgroup of patients.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1569-8041
    Keywords: cisplatin ; dose dense ; germ-cell tumour ; salvage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: In germ-cell tumours (GCT), there is continuing controversy over the relative merits of dose dense therapy (increased frequency over a given time) versus vertical intensification (increased dose per fraction). The value of using a cisplatin-based dose dense approach in the salvage setting has not been documented and in addition the role of methotrexate remains uncertain. This paper reviews results from our investigations of these issues. Patients and methods: Between 1987 and 1996, 65 patients with relapsing or refractory germ-cell tumour received weekly m-BOP (methotrexate, bleomycin, vincristine and cisplatin) as salvage therapy. Residual masses were excised if possible and patients progressing after this received cisplatin and ifosfamide based chemotherapy with or without high dose chemotherapy (HDCT) consolidation. Results: With a median follow-up of 33 months, 34% are progression free following m-BOP, 11% who had surgery for residual masses which showed viable cancers are progression free. A further 15% who progressed following m-BOP with or without surgery were rendered progression free by third-line therapy. Conclusions: The use of m-BOP as second line therapy with deferment of cisplatin and ifosfamide based treatment to third line therapy with consolidation of third line responses with HDCT, leads to an overall progression-free survival of 60%. It does not appear that M-BOP prejudiced the response to third line therapy suggesting a lack of cross resistance. The potentially lower risk of leukaemia and infertility from m-BOP requires further evaluation.
    Type of Medium: Electronic Resource
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