Showing posts with label DLBCL. Show all posts
Showing posts with label DLBCL. Show all posts

Tuesday, February 26, 2013

R-CHOP therapy alone in limited stage diffuse large B-cell lymphoma.


R-CHOP therapy alone in limited stage diffuse large B-cell lymphoma.


Feb 2013

Source

Department of Internal Medicine and Clinical Immunology, Yokohama City University Graduate School of Medicine, Yokohama, Japan.

Abstract

Long-term observation has identified a pattern of continuing relapse in limited stage diffuse large B-cell lymphoma (DLBCL) treated by three cycles of R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) plus involved-field irradiation. We retrospectively analysed 190 untreated patients with limited stage DLBCL treated by R-CHOP alone. All the patients were scheduled to undergo primary therapy with six cycles of full-dose R-CHOP. Cases with a dose reduction of more than 20% were excluded from the study. Additional local irradiation was allowed in patients with partial response (PR). Five patients received additional local irradiation after PR at the end of the R-CHOP therapy. The median observation period was 52 months. Median age at diagnosis was 63 years. The responses to therapy were 180 complete responses, eight PR, and two progression of disease (PD). The 5-year progression-free survival and 5-year overall survival rates were 84% and 90%, respectively, both in plateau. During the observation period, 29 patients experienced PD. The progression sites were the primary sites in 15 patients, outside the primary sites in 10, and undetermined in four patients. These results suggest that the 'standard' strategy of three cycles of R-CHOP followed by involved-field radiotherapy for limited stage DLBCL could be effectively replaced by six cycles of R-CHOP alone.

Thursday, February 7, 2013

Prognostic value of (18)F-FDG PET/CT after first-line treatment in patients with diffuse large B cell lymphoma


Prognostic value of (18)F-FDG PET/CT after first-line treatment in patients with diffuse large B cell lymphoma


2012

[Article in Chinese]

Source

Peking University Cancer Hospital & Institute, Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing 100142, China.

Abstract


OBJECTIVE:

To evaluate the value of (18)F-FDG PET/CT in detecting residual disease and predicting relapse following first-line treatment in patients with diffuse large B cell lymphoma (DLBCL).

METHODS:

The clinical data of 39 patients with DLBCL, who underwent PET/CT scan after first-line treatment, were analyzed retrospectively. Kaplan-Meier method was used to analyze the survival of patients.

RESULTS:

PET/CT findings were interpreted as negative, mild metabolism and positive. Seventeen patients' PET/CT findings were judged as negative, none of them relapsed with a median follow-up of 24.1 months, 13 were judged as mild metabolism, 2 of them relapsed with a median follow-up of 17.1 months. Of the rest 9 findings were judged as positive with a median follow-up of 16.3 months, 4 patients were considered as disease progression according to clinical manifestations and other radiographic results, 2 patients relapsed at the timepoints of 13.5 and 6.8 months after PET/CT scan respectively, the other 3 patients were diagnosed as negative by biopsy, none of them relapsed at the timepoints of 5.9, 9.6 and 20.0 months after PET/CT scan respectively. One-year progression-free-survival (PFS) for negative, mild metabolism and positive groups was 100%, 83% and 56%, respectively. Two-year PFS was 100%, 83% and 42%, respectively. Overall survival (OS) at 1 year for negative, mild metabolism and positive groups was 100%, 100% and 89%, respectively. Two-year OS was 100%, 100% and 63%, respectively (P = 0.004).

CONCLUSION:

DLBCL patients with negative and mild metabolism PET/CT following first-line treatment had good prognosis, who needed no additional therapy. While patients with positive PET/CT had poor prognosis, those patients should receive biopsy before adjusting treatment regimen because of the high false-positive rate.

Saturday, January 19, 2013

Primary diffuse large B cell lymphoma of the cranial vault.


Primary diffuse large B cell lymphoma of the cranial vault.

2012

Source

Department of Radiology, Hazrat Rasoul-e-Akram Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Abstract


Primary non-Hodgkin's lymphoma of the cranial vault is extremely rare. This case report presents a 42-year-old man with a painless subcutaneous scalp mass which extended intracranially associated with recent mild headache. Initial computed tomography and magnetic resonance imaging revealed two lesions emanating from the skull. Biopsy revealed a diagnosis of diffuse large B cell lymphoma (DLBCL). A thorough work-up revealed no other point of involvement. This case is concerned about considering lymphoma in the differential diagnosis of calvarial lesions with both intra- and extra cranial extensions but without obvious intervening bony destruction.

Friday, October 26, 2012

Rituximab Maintenance Therapy After Autologous Stem-Cell Transplantation in Patients With Relapsed CD20+ Diffuse Large B-Cell Lymphoma: Final Analysis of the Collaborative Trial in Relapsed Aggressive Lymphoma.


Rituximab Maintenance Therapy After Autologous Stem-Cell Transplantation in Patients With Relapsed CD20+ Diffuse Large B-Cell Lymphoma: Final Analysis of the Collaborative Trial in Relapsed Aggressive Lymphoma.


Oct 2012

Source

Christian Gisselbrecht and Josette Brière, Hôpital Saint Louis, Paris; Nicolas Mounier, Centre Hospitalier Universitaire de l'Archet, Nice; Noel J. Milpied, Hôpital Haut-Lévêque, Pessac; Gilles Salles, Hospices Civils de Lyon and Université de Lyon, Lyon, France; Norbert Schmitz and Bertram Glass, Asklepios Klinik St Georg, Hamburg; Ulrich Dührsen, Universitätsklinikum Essen, Essen; Andreas Viardot, Universitätsklinik Ulm, Ulm, Germany; Devinder Singh Gill, Princess Alexandra Hospital, Woodville, South Australia; David D. Ma, St Vincent's Hospital Sydney, Darlinghurst, New South Wales; Ray Lowenthal, Royal Hobart Hospital, Tasmania, Australia; David C. Linch, University College London, Cancer Institute, London; John Radford, University of Manchester, Christie Hospital National Health Service Trust, Manchester, United Kingdom; Marek Trneny, Charles University General Hospital, Prague, Czech Republic; Andre Bosly, Université Catholique de Louvain Mont-Godinne, Yvoir, Belgium; Nicolas Ketterer, Clinique Bois-Cerf, Lausanne, Switzerland; Ofer Shpilberg, Davidoff Center, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel; Hans Hagberg, Akademiska Sjukhuset, Uppsala, Sweden; and Craig H. Moskowitz, Memorial Sloan-Kettering Cancer Center, New York, NY.

Abstract


PURPOSE
The standard treatment for relapsed diffuse large B-cell lymphoma (DLBCL) is salvage chemotherapy followed by high-dose therapy and autologous stem-cell transplantation (ASCT). The impact of maintenance rituximab after ASCT is not known. 

PATIENTS AND METHODS
In total, 477 patients with CD20(+) DLBCL who were in their first relapse or refractory to initial therapy were randomly assigned to one of two salvage regimens. After three cycles of salvage chemotherapy, the responding patients received high-dose chemotherapy followed by ASCT. Then, 242 patients were randomly assigned to either rituximab every 2 months for 1 year or observation. 

RESULTS: 
46% v 56% for relapsed disease after 12 months), secondary age-adjusted International Prognostic Index (saaIPI) more than 1 - EFS: 37% v 61% for saaIPI , - and prior treatment with rituximab - EFS: 47% v 59% for no prior rituximab - . A significant difference in EFS between women at sixty three percent and men at forty six percent was also observed in the rituximab group. In the Cox model for maintenance, the saaIPI was a significant prognostic factor , as was male sex. 

CONCLUSION
In relapsed DLBCL, we observed no difference between the control group and the rituximab maintenance group and do not recommend rituximab after ASCT.

Thursday, October 18, 2012

The Hans algorithm failed to predict outcome in patients with diffuse large B-cell lymphoma treated with rituximab.


The Hans algorithm failed to predict outcome in patients with diffuse large B-cell lymphoma treated with rituximab.


Oct 2012

Abstract


Diffuse large B-cell lymphoma (DLBCL) consists of at least two biologically and pathogenetically different subtypes, the germinal centre B-cell (GCB) and the activated B cell type (ABC). It has been suggested that immunohistochemistry can discriminate these subtypes as well. The aim of this study was to verify the validity of the most commonly used Hans algorithm in patients with DLBCL treated with anthracycline- based chemotherapy with rituximab. Immunohistochemical staining using standard protocols was performed on formalin fixed paraffin-embedded tissues. CD20, CD5, CD23, BCL2, CD10, BCL6, MUM1 and Ki67 antibodies were applied. Out of 120 examined cases 52 patients were evaluated as GCB type and 68 patients as having non-GCB, out of a set of 99 patients treated with immunochemotherapy 45 patients with GCB and 54 patients with non-GCB DLBCL were identified. In this set of patients, there was no statistically significant difference neither in overall survival (OS) (HR 1.47 95% CI 0.51-2.63; p=0.45) nor in progression free survival (PFS) (HR 1.57, 95 % CI 0.76-3.22; p=0.731) between both groups. Keywords: DLBCL, Hans, rituximab, GC, nonGC.
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