• Asian Pacific Journal of Cancer Prevention
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• 제15권20호
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• pp.8759-8763
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• 2014

Background: Non-hodgkin lymphoma (NHL) is a diverse group of disease encompassing divergent tumor types with contrasting clinical behaviors. We aimed to evaluate the usefulness of Ki67 index in segregating indolent from aggressive NHL and its association with clinical parameters. Materials and Methods: During a study period of 4.5 years, a total of 215 cases of lymphomas were diagnosed among of which 172 cases were NHL. Ki67 immunohistochemical staining was performed by the DAKO envision method. Average proportion of tumor cells stained was calculated to determine the proliferative index. Results: The mean age at diagnosis was 46.2 years +19.8 (3-81) with a male to female ratio of 1.5:1. Mean Ki67 index for indolent NHL included 23% for small cell, 25% for mantle cell, 28.5% for marginal zone and 34.6% for follicular lymphoma. On the other hand, mean Ki67 index for aggressive lymphomas were 66.4%, 66.9%, 80.3%, 83.3% and 94.4% for diffuse large B cell, T cell (NOS), anaplastic large cell, lymphoblastic and burkitts lymphoma respectively. No significant correlation was found between Ki67 index and other clinical parameters like age and extra nodal involvement. Conclusions: Ki67 index is a valuable IHC marker to distinguish indolent from aggressive lymphomas especially in small needle biopsies where exact typing may not be possible.

• Tuberculosis and Respiratory Diseases
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• 제69권5호
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• pp.354-360
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• 2010

Background: Primary non-Hodgkin's lymphoma of the lung is a rare entity. It is represented commonly as marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) type. Although there have been a few reviews of this lymphoma, clinical features, radiologic findings, management and prognosis have not been well defined. Methods: We reviewed the medical records of 24 patients with primary pulmonary lymphoma between January 1995 and September 2008; all diagnoses had been confirmed based on pathology. Results: The median follow-up time was 42.3 months (range, 0.1~131.2 months). Five (20.8%) patients were asymptomatic, 17 (70.8%) patients had pulmonary symptoms, and the remaining 2 (8.3%) patients presented with constitutional symptoms. There were 16 (66.7%) patients with MALT lymphoma, 4 (16.7%) patients with diffuse large B-cell lymphoma and 4 (16.7%) patients with lymphoma that had not received a WHO classification. Radiologic findings of primary pulmonary lymphoma were diverse and multiple nodule or consolidation was the most common finding regardless of pathologic lymphoma type. PET scan was carried out in 13 (54.2%) patients and all lesions showed notable FDG uptake. MALT lymphoma showed a trend of better prognosis (3-year survival, 78.8% vs. 70.0%; 5-year survival, 78.8% vs. 52.5%; p=0.310) than non-MALT lymphoma. Conclusion: Primary non-Hodgkin's lymphoma of the lung occurs with nonspecific clinical features and radiologic findings. MALT lymphoma is the most common pathologic type of primary pulmonary lymphoma. This entity of lymphoma appears to have a good prognosis and in this study, there was a trend of better outcome than non-MALT lymphoma.

• Imaging Science in Dentistry
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• 제43권1호
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• pp.59-62
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• 2013

Non-Hodgkin's lymphoma (NHL) constitutes a group of malignancies those arises from cellular components of lymphoid or extranodal tissues. The head and neck is the most common area for the presentation of these lymphoproliferative disorders. Primary involvement of salivary glands is uncommon. This report described a case of a 73-year-old female patient who presented with involvement of both nodal and extranodal sites, with predominant involvement of salivary glands. The tumor staging worked up along with imaging, histopathological, and immunohistochemical findings were discussed. Computed tomographic images showed the involvement of Waldeyer's ring, larynx, orbit, and spleen. This report described imaging and prognostic tumor markers in diagnosing, treatment planning, and prognosis.

• Annals of Clinical Neurophysiology
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• 제21권2호
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• pp.108-112
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• 2019

Non-Hodgkin's lymphoma (NHL) may initially present with atypical neurological manifestations, including paraneoplastic neurological syndromes. Herein, we report the case showing an initial manifestation of systemic NHL with paraneoplastic demyelination in the brain that initially mimicked the symptoms of stroke, seizure, and brain tumor. A high index of suspicion and timely diagnostic workup is required to prevent diagnostic delay and commence proper management of the condition. In this situation, a whole-body FDG PET/CT could be useful to screen for occult malignancy.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제45권4호
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• pp.225-229
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• 2019

Individuals with human immunodeficiency virus (HIV) infection present with unique intraoral manifestations of various neoplasms. Intraoral HIV-associated Burkitt's lymphoma is a rare presentation, especially in patients of Indian origin and may present as an initial sign of HIV. The objective of this paper is to report a rare case of Burkitt's lymphoma in an HIV-positive Indian patient along with a special emphasis on differential diagnosis. A 30-year-old Indian female presented with a solitary, well-defined, exophytic mass extending anteroposteriorly and buccolingually from the 35th to 38th regions with no evidence of intraosseous extension. An incisional biopsy was performed, and histopathology showed sheets of neoplastic lymphoid cells with numerous tingible body macrophages with clear cytoplasm, presenting a starry sky appearance, suggesting a diagnosis of BL. The tumor cells were positive for CD10, CD20, c-myc, and Epstein-Barr virus, with a nearly 100% Ki-67 proliferative index. The patient tested positive for HIV. This report indicates the importance of immunohistochemical analysis to differentiate Burkitt's lymphoma from other similar lesions like diffuse large B-cell lymphoma. Thorough knowledge of the clinical presentation, etiopathogenesis, histopathology, and immunoprofile of intraoral HIV-associated Burkitt's lymphoma is essential among clinicians and pathologists.

• 대한두개안면성형외과학회지
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• 제23권3호
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• pp.125-129
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• 2022

Most malignant lymphomas of the head and neck region are non-Hodgkin lymphomas (NHL), and diffuse large B-cell lymphoma is the most common subtype. The prevalence of malignant lymphoma among parotid tumors is low, approximately 1% to 4%. The most common symptom of parotid lymphoma is a unilateral, non-tender, firm mass that slowly grows in size over time. As its clinical manifestations are nonspecific, a comprehensive assessment is required for an accurate diagnosis. The initial work-up includes imaging tools, such as computed tomography and magnetic resonance imaging. However, NHL of the parotid gland is difficult to distinguish from other types of benign tumors prior to biopsy; histopathological evaluation and subsequent immunohistochemical staining are needed for the final diagnosis. Once a definitive diagnosis is established, patients should be referred to an oncologist for staging. Treatment is mainly based on systemic chemotherapy, whereas radiotherapy is indicated for certain cases. Here, we report the case of a 53-year-old man who presented with a progressively enlarging mass in the right parotid area, which was later diagnosed as malignant lymphoma of the parotid gland after superficial parotidectomy.

• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2285-2289
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• 2016

Background: Epstein-Barr virus (EBV) positive diffuse large B-cell lymphoma (DLBCL) of the elderly is an entity introduced in the latest WHO classification of lymphoid tumors and defined in patients older than 50 years without prior lymphoma or immunodeficiency. However, recently it has also been seen in patients under 50. There is thus debate as to whether these are separate entities. Materials and Methods: In this retrospective study, we analyzed de novo DLBCL admitted to our institute over a period of two years. Clinical data included age, sex, nodal and extranodal presentation. The results of an immunohistochemistry (IHC) panel were also reviewed. IHC findings were mainly used to sub-classify DLBCL as germinal center vs. non germinal center types. IHC for identification of LMP-1 (latent membrane protein) and in situ hybridization for detection of EBV-encoded RNA (EBER) was performed. EBV prevalence, clinical data and IHC findings were compared between patients under and over 50 years of age. Results: Out of 95 DLBCL, 11.6% were EBV positive (7.5% and 14.5% in the young and old groups). We did not find any significant differences in IHC subclasses and clinical data between EBV positive DLBCL (EBV+DLBCL) of young and old groups. Conclusions: EBV+DLBCL are not exclusive to patients older than 50 years. With regard to clinical data as well as IHC subclasses, no differences were evident between EBV+DLBCL of young and old groups. Our suggestion is to eliminate any cut off age for EBV+DLBCL.

• Asian Pacific Journal of Cancer Prevention
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• 제15권4호
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• pp.1585-1588
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• 2014

Background: Data regarding childhood and adolescent non Hodgkin lymphomas in Iran are limited. The aim of this study was to assess the epidemiological and histomorphological features and survival of affected patients in our center. Materials and Methods: The clinicopathologic features and outcome of 44 children and adolescents with non Hodgkin lymphoma diagnosed during 2004-2012, were investigated retrospectively. The influence of potential prognostic parameters in overall survival was investigated by log-rank test and Cox regression analysis. Results: The mean age at presentation was $13.8{\pm}6.16$ years with a male predilection (M: F=3:1). Malignant lymphoma, not otherwise specified, diffuse large cell lymphoma and Burkitt lymphoma were the three most common histological types observed. The tumors were 36.4% intermediate grade, 27.3% high grade and 34.1% belonged to the malignant lymphoma not otherwise specified group. Immunohistochemistry findings were available in 39 cases. Out of these cases 33 (84.6%) had B cell lineage, 4 (10.25%) T cell lineage and 2 (5.12%) of the cases belonged to miscellaneous group. 3 year and 5 year survivals were 48% and 30% respectively and median survival was 36 months (95%CI=21.7-50.3 months). Overall survival in patients with high grade tumors was 19.5 months, in the intermediate group,79 months, and for malignant lymphomas not otherwise specified it was 33.6 months (p value=0.000). Conclusions: The survival rate for children and adolescents with non Hodgkin lymphomas at our center during 2004-2012 was at a low level.

• Asian Pacific Journal of Cancer Prevention
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• 제17권sup3호
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• pp.1-4
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• 2016

The aim of this research was to describe the incidence and histopathological subtypes of head and neck lymphoma in Guilan province, Iran. In this retrospective study, all cases of head and neck cancers registered in Iranian Cancer Registry Program in Guilan province of Iran from 2004 to 2009 were obtained and included in the analysis. Out of 1,510 cases, 169 (11.2%) were reported as lymphomas (87 cases of non-Hodgkin, 67 cases of Hodgkin, and 13 cases of unknown type). The mean ages of males and females diagnosed with Hodgkin's lymphoma were 30.4 and 28.7 years, respectively. For non-Hodgkin's lymphoma the respective figures were 50.5 and 49.3 years old. Among various histological subtypes of non-Hodgkin's lymphoma, the diffuse large B-cell type (74.2%) was the most frequent while immunoblastic lymphoma (1.1%) was the least frequent. Nodular sclerosis (58.2%) and mixed cellularity (18.0%) types were most frequent among Hodgkin's lymphomas.

• 생명과학회지
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• 제30권4호
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• pp.379-385
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• 2020

Phlojodicarpus sibiricus와 Artemisia kruhsiana Besser는 러시아 극한 지방에서 자생하며, 민간요법으로 널리 쓰여 왔다. 최근 연구에 따르면, 두 식물 추출액(PSE와 AKBE)은 항비만효과, 혈관신생 억제 효과 등 다양한 의학적 효과를 가진 것으로 나타났다. 본 연구논문에서는 PSE와 AKBE의 항림프종 효과와 기작을 분석하였다. PSE와 AKBE를 다양한 유전적 변이를 가진 DLBCL 세포주에 처리하였을 때, 농도 의존적으로 세포 생존율이 감소하였다. 하지만, 마우스의 골수나 비장으로부터 분리한 정상 세포에는 거의 영향을 미치지 않는 것으로 보아, 두 식물 추출액의 세포사멸 효과는 종양세포 특이적인 것으로 예상되며, 환자에 적용할 경우 부작용이 최소한만 나타날 것으로 예상된다. PSE와 AKBE의 세포사멸 효과는 Bcl-2, Bcl-xL, 그리고 Mcl-1 등의 anti-apoptotic Bcl-2 family member 유전자의 감소로 인한 미토콘드리아의 막 전위 붕괴에 기인함을 증명하였다. 흥미롭게도, 두 식물 추출액에 의한 세포사멸 효과는 Myc 종양유전자와는 독립적으로 일어났다. 이 결과를 종합하면, PSE와 AKBE는 항림프종 효과를 보유하고 있으며, 추후 연구를 통하여 세포사멸에 관여하는 단일 물질을 분리할 경우, 기존의 항암제를 대체할 수 있는 새로운 방법을 제시할 수 있을 것으로 기대된다.