1.Clinical analysis of four cases of pulmonary actinomycosis misdiagnosed as peripheral lung cancer
Yuanliang SUN ; Donglan LUO ; Zhengxian CHEN
Clinical Medicine of China 2009;25(7):712-714
Objective To investigate the clinical characteristics of pulmonary actinomycosis and to improve the understanding of the clinical misdiagnosis of pulmonary actinomycosis. Method Clinical data of 4 pulmonary actinomycosis patients were analized and related literatures were reviewed. Results All the 4 pulmonary actinomy-eosis cases were misdiaguosed as lung cancer. Pulmonary actinomycosis can be correctly diagnosed through lung bi-opsy by CT-guided percutaneous paracentesis,fiberoptic,bronchoscopy,or pathological examination of the resected pulmonary lobe. Conclusions Pulmonary actinomycosis is a rare lung infection caused by fungus,and is liable to be misdiagnosed as peripheral lung cancer. The capacity of distinguishing pulmonary actinomycosis from peripheral lung cancer needs to be improved.
2.Pathologically confirmed pulmonary Actinomycosis in 11 cases:clinical features and misdiagnosis analysis
Pingping CHEN ; Junliang DENG ; Jiang QIAN ; Jian WU ; Donglan LUO ; Hong AN ; Xinglin GAO
Chinese Journal of Geriatrics 2017;36(5):537-542
Objective To analyze the pathologically confirmed pulmonary Actinomycosis in the 11 patients in focusing on clinical features and mis-diagnostic reasons so as to improve physicians' awareness of this rare disease and reduce the misdiagnosis.Methods We retrospectively reviewed the medical records of 11 cases with pathologically confirmed pulmonary Actinomycosis during January 2003-August 2015.The clinical data and main causes of misdiagnosis in these cases were collected and analyzed.Results The study included 11 patients with a mean age of(53.0 ± 11.6.0)years.Among the 11 cases,8 (72.7 %) patients had complications,6 (54.5 %) were current or ex-smokers.Main clinical manifestations of 11 cases were cough(11/11,100.0 %),sputum(11/11,100.0 %),hemoptysis (7/11,63.6%),chest pain(6/11,54.5%)and fever(3/11,27.3%).Ten patients presented with one lobe of lung lesions,including 4 patients in the lower lobe and 3 in the upper lobe of the left lung,2 in the upper lobe and 1 in the lower lobe of the right lung.While,the remained one case presented with lesion locating in right main bronchus.Iconography often presented as pulmonary mass shadow,consolidation shadow,spicule sign,lobulation sign,hilar and/or mediastinal lymphadenopathy and pleural effusion.Vacuolar lesions were observed in some of the focuses.Flexible bronchoscopy was performed in 8 (72.7%)patients.Among them,7 patients showed mucosal swelling and congestion,luminal occlusion with purulence secretion,2 cases with polypoid neoplasm.Initial misdiagnosis rate were 100% (11/11),among which 7 cases were misdiagnosed as lung cancer,2 cases as fungus infection,and 1 case as pulmonary tuberculosis and 1 case as pneumonia,respectively.All patients were definitely diagnosed by biopsy finding an evidence of hyphae of Actinomycosis in lung tissue specimens.The definitive diagnosis was made by CT-guided percutaneous lung biopsy in 4 cases,by transbronchial lung biopsy (TBLB)in 5 cases and by thoracotomy or video-assisted thoracoscopic surgery(VATS) in 1 case respectively.Actinomycosis in most patients was cured with high-dose penicillin administration over a prolonged period.Conclusions The diagnosis of pulmonary Actinomycosis remains challenging via its non-specific clinical symptoms and iconography features,and the presence of comorbidity may further increase the difficulty and complexity of diagnosis,leading to delaying-or mistaking-diagnosis.Obtaining positively pathological specimens is diagnostic key.Transbronchial lung biopsy through a bronchoscope and CT-guided percutaneous needle biopsy are the priority methods.
4. Pathological features of duodenal-type follicular lymphoma
Fen ZHANG ; Donglan LUO ; Yu CHEN ; Jiao HE ; Jinhai YAN ; Luqiao LUO ; Xinlan LUO ; Yanhui LIU
Chinese Journal of Pathology 2019;48(1):22-25
Objective:
To investigate the clinicopathological features, treatment and prognosis of duodenal-type follicular lymphoma.
Methods:
Four cases of duodenal-type follicular lymphoma diagnosed at Guangdong General Hospital from 2014 to 2015 with detailed clinical data were included. The histomorphology, immunophenotype, treatment and prognoses were analyzed.
Results:
The patients′ age ranged from 51 to 57 years (mean 54 years), and there were 2 males and 2 females. The involved sites were gastric fundus in one case, second portion of the duodenum in two cases and terminal ileum in one case. All patients presented with multiple mucosal granules or nodules at endoscopy. Microscopically, there were multiple mucosal neoplastic follicles, constituting grade 1-2 disease based on nodal follicular lymphoma grading system. The tumor cells were positive for CD20, CD10, bcl-6 and bcl-2. CD21 highlighted the follicular dendritic meshwork mainly at the periphery of the follicles. Proliferation index was low. Three patients received rituximab monotherapy for 4 cycles, leading to complete remission. One patient refused therapy and the disease progressed to systemic lymphoma 15 months after the initial diagnosis.
Conclusions
Duodenal-type follicular lymphoma is a special variant of follicular lymphoma with indolent clinical course. The tumor exhibits morphology of low grade follicular lymphoma with characteristic dendritic meshwork at the periphery of the follicles and a low proliferation index. Prognosis is excellent. Rituximab monotherapy is treatment of choice, but a small minority of patients may progress to systemic disease.
5.Diagnosis and differential diagnosis of nodular lymphocyte-predominant Hodgkin's lymphoma.
Yanhui LIU ; Xiongzeng ZHU ; Hengguo ZHUANG ; Hanliang LIN ; Qiuliang WU ; Guangyu JIANG ; Yingying GU ; Donglan LUO ; Xinlan LUO
Chinese Journal of Pathology 2002;31(3):227-230
OBJECTIVETo study the diagnosis and the differential diagnosis of nodular lymphocyte-predominant Hodgkin's lymphoma (NLPHL).
METHODS245 cases of Hodgkin's lymphoma (HL) diagnosed between 1980 and 2000 from 3 hospitals in Guangzhou were reviewed. Four cases of NLPHL were confirmed according to the WHO classification of lymphoid neoplasms. Among the other 3 cases of NLPHL, 2 collected from other clinical centers and 1 from Fudan University Cancer Hospital. Immunohistochemistry (IHC) were performed on paraffin sections through SP technique using a panel of markers to define the large neoplastic cells (CD45, CD20, CD15, CD30 and vimentin) as well as the non-neoplastic background cells (CD3, CD20, CD45RO, CD57, CD68 and TIA-1).
RESULTSSeven patients with NLPHL were 4 males and 3 females, age 29 to 70 years, average 43.8 years. All patients had lymphadenopathy. Histologically, in NLPHL, instead of the structure of normal lymph nodes, the tumor tissue became nodular in architecture. Characteristic lymphocytic and histiocytic (L&H) cells with scant cytoplasm and large multilobulated nuclei distributed among a predominant population of small lymphoid cells. The large cells exhibited a CD45+, CD20+, but CD15-, CD30- and vimentin-phenotype. The background cellularity was relatively rich in B cells and the majority of T-cells infiltrated were CD57(+) cells. TIA-1+ cells were few.
CONCLUSIONSNLPHL can be diagnosed according to the morphologic and immunophenotypic features rather than by morphology alone. It is important to distinguish this tumor from its morphologic mimics, such as lymphocyte-rich classical Hodgkin's lymphoma (LRCHL) and T-cell rich B-cell lymphoma (TCRBCL). The immunophenotype of neoplastic cells and background cells are the helpful criteria for the differential diagnosis.
B-Lymphocytes ; Diagnosis, Differential ; Hodgkin Disease ; Humans ; Immunophenotyping ; Lymphoma, B-Cell
6.Immunophenotype and differential diagnosis of Hodgkin's lymphoma.
Yanhui LIU ; Hengguo ZHUANG ; Xinbo LIAO ; Xinlan LUO ; Donglan LUO ; Xiuling CAI
Chinese Journal of Hematology 2002;23(10):524-527
OBJECTIVETo study the immunophenotype and differential diagnosis of Hodgkin's lymphoma (HL).
METHODFifty six cases originally diagnosed as HL were re-evaluated according to lymphoma classification of WHO 2000 on paraffin sections using SP immunohistochemistry.
RESULTSAmong the 56 cases, 47 met the WHO criteria for HL, 8 were NHL and 1 metastatic tumor. Of the 47 HL cases, 2 were nodular lymphocyte predominant HL (NLPHL), 43 classical Hodgkin's lymphoma (CHL) and 2 unclassified HL, and of the 8 cases reclassified as NHL, 6 were T-cell rich B-cell lymphoma (TCRBCL) and 2 anaplastic large cell lymphoma (ALCL). In NLPHL cases, L&H cells were CD(20)(+), CD(15)(-) and CD(30)(-); CD(57)(+) cells and small B-lymphocytes predominated the background infiltration. Diagnostic R-S cells and other tumor cells in 43 cases of CHL were positive for CD(30) (100%), CD(15) (81%) and CD(20) (7%). Six cases of TCRBCL were negative for CD(15) and CD(30). Two cases of ALCL were positive for CD(30), ALK-1 and CD(3), and negative for CD(15) and CD(20). The reactive inflammatory infiltration in CHL and TCRBCL was rich in TIA-1 positive cytotoxic lymphocytes, and CD(57)(+) cells were rarely encountered.
CONCLUSIONCombining the immunophenotype of tumor cells and background cells with morphologic criteria are more helpful for classification of HL, and discrimination between NLPHL, CHL and TCRBCL.
Antigens, CD ; analysis ; Diagnosis, Differential ; Hodgkin Disease ; immunology ; metabolism ; pathology ; Humans ; Immunohistochemistry ; Immunophenotyping ; Membrane Proteins ; analysis ; Mucin-1 ; analysis ; Poly(A)-Binding Proteins ; Proteins ; RNA-Binding Proteins ; analysis ; T-Cell Intracellular Antigen-1
7.Expression and significance of HGAL and LMO2 in follicular lymphoma.
Fen ZHANG ; Donglan LUO ; Xinlan LUO ; Yu CHEN ; Jie XU ; Jie CHEN ; Hengguo ZHUANG ; Yanhui LIU
Chinese Journal of Pathology 2016;45(2):83-85
OBJECTIVETo evaluate the diagnostic value of HGAL and LMO2 expression and compare with CD10 and bcl-6 in follicular lymphoma (FL).
METHODS63 cases of FL were collected from Guangdong General Hospital. The expression of HGAL, LMO2, CD10 and bcl-6 was assessed by immunohistochemistry.
RESULTSThe expression rates of HGAL, LMO2, CD10 and bcl-6 were 98.4% (62/63), 82.5% (52/63), 82.5% (52/63) and 87.3% (55/63), respectively. The expression rate of HGAL was higher than those of LMO2, CD10 and bcl-6, but the differences were not significant (P>0.05). There was no significant difference in HGAL, LMO2 and bcl-6 expression among FL1, FL2 and FL3 cases. The CD10 expression rate of FL1-3A cases was significantly higher than that of FL3B cases(P<0.01).
CONCLUSIONSHGAL and LMO2, especially HGAL, can be used in FL particularly high grade FL as useful germinal center marker.
Adaptor Proteins, Signal Transducing ; metabolism ; Biomarkers, Tumor ; metabolism ; Germinal Center ; Humans ; Immunohistochemistry ; LIM Domain Proteins ; metabolism ; Lymphoma, Follicular ; metabolism ; Neoplasm Proteins ; metabolism ; Neprilysin ; metabolism ; Proto-Oncogene Proteins ; metabolism ; Proto-Oncogene Proteins c-bcl-6 ; metabolism
8. Diagnostic and prognostic implications of MAML2 gene translocation in primary pulmonary mucoepidermoid carcinoma
Donglan LUO ; Jinhai YAN ; Yan GE ; Lixu YAN ; Jie CHEN ; Jie XU ; Xinlan LUO ; Yanhui LIU
Chinese Journal of Pathology 2019;48(1):26-30
Objective:
To investigate MAML2 gene-translocation in primary pulmonary mucoepidermoid carcinoma (PMEC) and pulmanary adenosquamous carcinoma, and the optimal diagnostic immunohistiochemical (IHC) panel in distinguishing PMEC from adenosqumous carcinoma.
Methods:
Twenty-four cases of PMEC and 44 adenosqumous carcinoma diagnosed in the Guangdong General Hospital were tested for MAML2 translocation by fluorescent in-situ hybridization (FISH) using tissue array. An IHC panel including TTF1, Napsin A, CK5/6, p63, p40 and Ki-67 was performed on the cohort. The clinical data for all cases were collected and all PMEC patients had follow-up information.
Results:
The patients′ age ranged form 6 to 73 years, with a median age of 32 years. The male to female ratio was 1.4∶1.0. MAML2 translocation was found in 16/24 (66.7%) cases of PMEC whereas all 44 cases adenosqumous carcinoma were negative for translocation. All the cases of the PMEC were negative for TTF1 and Napsin A but positive for CK5/6, p63 and p40 in the intermediate cells and epidermal-like cells. In most PMEC cases, the Ki-67 expression index was lower than 10%. In contrast, most cases of adenosqumous carcinomas expressed TTF1 and Napsin A in the adenomatous component and CK5/6, p63 and p40 in the squamous component, which expression pattern was different from that of PMEC. Based on IHC staining, 2 cases of highly invasive ALK-positive adenocarcinoma mimicing PMEC were also found in the study.
Conclusions
MAML2 gene translocation can be detected in about two-third of PMEC. Translocation of MAML2 gene and lower morphology grading are associated with good prognosis. The combined use of IHC antibodies panel is helpful to distinguish PMEC from the adenosqumous carcinoma and adenocarcinoma mimicing PMEC.
9. Clinical features and treatment outcomes in primary central nervous system lymphoma: a descriptive analysis of 62 patients
Yan GE ; Xingtao LIN ; Donglan LUO ; Fen ZHANG ; Jie XU ; Zhi LI ; Yanhui LIU
Chinese Journal of Pathology 2019;48(11):861-866
Objective:
To assess clinical features and treatment outcomes in immunocompetent patients with primary central nervous system lymphoma (PCNSL).
Methods:
Sixty-two patients with PCNSL who attended Guangdong General Hospital between January 1998 and January 2012 were included. Survival curves were estimated using Kaplan-Meier survival methodology and statistical significance of continuous was assessed
10. Expression of βF1 and T cell receptor γ in T lymphoblastic lymphoma/leukemia
Fen ZHANG ; Donglan LUO ; Yu CHEN ; Hongmei WU ; Jinhai YAN ; Xinlan LUO ; Jiao HE ; Luqiao LUO ; Yanhui LIU
Chinese Journal of Pathology 2018;47(2):119-122
Objective:
To evaluate the expression of βF1 and T cell receptor (TCR)γ in T lymphoblastic lymphoma/leukemia(T-LBL/ALL), and investigate the clinicopathological features.
Methods:
Fifty-one cases of T-LBL/ALL were collected at Guangdong General Hospital from 2010 to 2016, the expression of βF1 and TCRγ was assessed by immunohistochemistry.
Results:
There were 13 cases of children and adolescents, and 38 cases of adults. The expression rates of βF1 and TCRγ were 27.5%(14/51) and 15.7%(8/51) respectively. The proportion of adults in αβ T-LBL/ALL, TCR-silent T-LBL/ALL and γδ T-LBL/ALL was 7/14, 79.3%(23/29)and 8/8 respectively, and the difference was significant (