A 39-year-old man infected with human immunodeficiency virus (HIV) was admitted to our hospital because of sudden onset of chest pain. Chest radiography revealed pneumothorax of the right lung. Computed tomographic scans disclosed a 5.8-cm-sized emphysematous bulla in the right middle lobe of the lung. Histologically, the wedge-resected lung showed medium to large atypical cells within the bullous cavity of the Pneumocystis jirovecii pneumonia, without solid mass formation. These atypical cells were confirmed to be large B-cell lymphoma, Epstein-Barr virus–positive and human herpesvirus 8–negative. Therefore, this case was not diagnosed as primary effusion lymphoma, but effusion-based lymphoma arising in an emphysematous cavity of an HIV-infected patient. This type of effusion-based lymphoma has never been reported, and, although rare, it should be noted in order to clinically diagnose this lymphoma.
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Primary Effusion Lymphoma: A Timely Review on the Association with HIV, HHV8, and EBV Chih-Yi Liu, Bo-Jung Chen, Shih-Sung Chuang Diagnostics.2022; 12(3): 713. CrossRef
Human herpesvirus 8-negative effusion-based large B-cell lymphoma: a distinct entity with unique clinicopathologic characteristics Savanah D. Gisriel, Ji Yuan, Ryan C. Braunberger, Danielle L.V. Maracaja, Xueyan Chen, Xiaojun Wu, Jenna McCracken, Mingyi Chen, Yi Xie, Laura E. Brown, Peng Li, Yi Zhou, Tarsheen Sethi, Austin McHenry, Ronald G. Hauser, Nathan Paulson, Haiming Tang, Eric Modern Pathology.2022; 35(10): 1411. CrossRef
Age and CD20 Expression Are Significant Prognostic Factors in Human Herpes Virus-8-negative Effusion-based Lymphoma Tomomi Kubota, Yosuke Sasaki, Eisuke Shiozawa, Masafumi Takimoto, Tsunekazu Hishima, Ja-Mun Chong American Journal of Surgical Pathology.2018; 42(12): 1607. CrossRef
BACKGROUND The purpose of this study was to investigate the prognostic significance of the Epstein-Barr virus (EBV) infected non-neoplastic lymphocytes in patients with Hodgkin lymphoma (HL). METHODS Seventy-seven cases of HL were evaluated by immunohistochemical analysis and EBV-encoded RNA in situ hybridization. The cases were divided into three groups according to the EBV status. EBV was negative in 48 cases (group 1), EBV was located in the Hodgkin/Reed-Sternberg (HRS) cells, but not in the non-neoplastic lymphocytes in 20 cases (26%) (group 2) and EBV was located in both the HRS cells and the non-neoplastic lymphocytes in 9 cases (12%) (group 3). RESULTS The groups differed with respect to the age distribution, the clinical presentation and the prognosis.
The median ages were 30 (group 1), 47.5 (group 2) and 23 years (group 3) (p = 0.011). B symptoms (p = 0.007) and the histologic subtype of mixed cellularity classical HL (p = 0.001) were more common in the EBV-positive patients than in their EBV-negative counterparts. Two patients from group 3 had associated chronic EBV infection syndrome. The five-year survival rate was 97.56% in group 1, 75.76% in group 2 and 100% in group 3 (p = 0.0178). CONCLUSIONS HL with EBV located in both the HRS cells and the non-neoplastic lymphocytes is a distinct prognostic subgroup that has better survival than the HL with EBV located in only the HRS cells.
BACKGROUND Gastric carcinoma with lymphoid rich stroma (GCLRS) is an undifferentiated gastric carcinoma with heavy lymphocytic infiltrate. In order to clarify the relationship between lymphocytic infiltration and apoptosis in gastric carcinoma, we investigated the association of apoptosis with apoptotic proteins and Epstein-Barr Virus (EBV) expression in GCLRS. METHODS We performed immunohistochemical stains for bcl-2, bax and in situ hybridization for EBER (Epstein-Barr virus encoded RNA)-1 and the terminal deoxynucleaotidil transferase mediated dUTP-digoxigenin nick end labelling (TUNEL) technique using 47 out of 1635 gastric carcinoma cases. RESULTS The prevalence of GCLRS was 1.47% (24/1635). The prevalence of EBV involvement in GCLRS (79%, 19/24) was significantly higher than that of gastric carcinoma with lymphoid poor stroma (GCLPS) (8.7%, 2/23). The immunohistochemical stain for bcl-2 revealed negative expressions in all cases, but that of bax was positive for in all cases. bax was significantly correlated with the apototic index (P<0.05). There was no statistical significance between lymphocytic infiltration and apoptosis.
The lymphocytic infiltration significantly correlated with the expression of EBV (P<0.05) but not with survival rate and apoptosis. However, most of the GCLRS displayed low clinical stages(stage IA, B), and we suggest that was a proper reason for a good prognosis. CONCLUSIONS These results support that EBV is associated with GCLRS, and there is no relationship between apoptosis and bcl-2, bax and prognosis. They also suggest that EBV infection play an important role in the gastric carcinogenesis.
BACKGROUND The differential diagnosis of Kaposi sarcoma includes many disease that range from benign disease to malignant tumors. However, little information is available about the immunohistochemical characteristics of Kaposi sarcoma. METHODS The expressions of 13 various proteins (HHV-8 LNA-1, Ki-67, bcl-2, p53, CD31, CD34, factor VIII, D2-40, vimentin, SMA, S-100, EMA, and c-kit) were evaluated immunohistochemically in 49 vascular tumors including 16 Kaposi sarcomas, 8 angiosarcomas, 2 hemangioendotheliomas, and 23 benign vascular tumors with using the tissue array method. RESULTS All 16 cases of Kaposi sarcoma showed nuclear staining for HHV-8 LNA-1, whereas all the cases of angiosarcoma and benign vascular lesions were negative for HHV-8 LNA-1 (p<0.001). All Kaposi sarcoma were positive for D2-40, which is a marker of lymphatic differentiation, but 25% of the benign vascular lesions and 30.4% of the angiosarcoma were positive for D2-40 (p<0.001). The mean proliferation index as assessed by Ki-67 immunostaining revealed no difference between the benign and malignant vascular lesions (p>0.05). No Kaposi sarcoma showed a bcl-2 expression, but 62.5% of the angiosarcomas and 21.7% of the benign vascular tumors had bcl-2 expressions (p=0.005). CONCLUSIONS Immunohistochemical detection of HHV-8 LNA-1 and D2-40 are useful tools to differentiate Kaposi sarcoma from other vascular tumors.
BACKGROUND Human herpesvirus 8 (HHV-8) has been strongly implicated in the etiopathogenesis of multiple myeloma.
Cytokines, especially interleukin-6, that are produced by HHV-8 infected bone marrow stromal cells may play a role in the proliferation of neoplastic plasma cells. Viral DNA sequences have been detected in the bone marrow and peripheral blood cells of myeloma patients. Yet some investigators have not found the same results. METHODS We exmined the presence of HHV-8 DNA in the paraffin-embedded cell block specimens of bone marrow aspirations from 26 patients with multiple myeloma by polymerase chain reaction (PCR) with KS330(233) primers.
Thirteen cases of bone marrow aspirations from patients with other diseases were used as a negative control. The DNA extracted from the BC-1 cell line was used as a positive control. Immunohistochemistry using commercially available HHV-8 antibody was done in the cases that were proven HHV-8 DNA-positive by PCR. RESULTS One case (3.9%) among the 26 patients with myleoma was positive for HHV-8 DNA by PCR, but no positive cells were detected in this case by immunohistochemistry. CONCLUSIONS We could not find a clear relation between myeloma and HHV-8 in Korean patients examined in the present study.