EUS-FNA in experienced hands is a valuable diagnostic modality, in conjunction with ROSE, immunohistochemistry and flow cytometry, in the diagnosis and sub-typing of both primary and secondary pancreatic lymphoma.
Purpose: Head and neck tumours include tumours of nose, paranasal sinuses, oropharynx, larynx and mouth. Squamous cell carcinoma (SCC) is the most common head and neck malignant tumour which accounts for 90% of head and neck malignant tumours. p21 is an important immunohistochemical marker which has signi cant role in predicting prognosis of head and neck SCC (HNSCC). Increased p21 expression in HNSCC is associated with bad prognosis in terms of increased risk of nodal metastasis, increased rate of recurrence and decreased survival rate. The purpose of this study was to evaluate the expression of p21 in HNSCC with various clinicopathologic and prognostic parametres. Materials and Methods: A total of 110 patients (n = 110) of HNSCC (oral cavity n = 98 and laryngeal tumours n = 12) were included in the study which were diagnosed and treated between January 2008 and January 2011 at a tertiary care centre in Pakistan. Mean age was 51 years (age range 15–78). 65 (59%) were male and 45 (41%) were female. Tumours were classi ed as p21 positive when ≥10% tumour cells were immunoreactive for p21. p21 expression was noted and correlated with T-stage, nodal metastasis, perineural and depth of invasion, recurrence and 2-year survival rate. Results: Of 110 cases, p21-positive cases were 88 (80%) compared to 22 (20%) negative. T1–T2 tumours with p21 expression were 59 (67.04%) while 17 cases (77.27%) had negative for p21 (P = 0.44). Amongst T3–T4, 29 cases showed p21 expression (32.96%) while 5 cases (22.73%) were negative (P = 0.44). Nodal metastasis was seen in 51 cases (57.95%) with p21 positivity as compared to 4 cases (18.8%) with no p21 expression (P = 0.0015). Perineural invasion was seen in 15 carcinomas (17.04%) having p21 positivity and 1 case (4.54%) with p21 negativity (P = 0.18). 48 cases (54.54%) had depth of invasion >1 cm with positive p21 as compared to 4 cases (18.18%) without (P value = 0.0035). 39 cases (44.31%) showed recurrence along with p21 expression while 3 cases (13.63%) showed recurrence without (P = 0.0076). 2-year survival rate was 56.81% (n = 88) in p21 positive cases, whereas it was 90.90% (n = 20) those with negative p21 (P = 0.0026). Conclusion: Positive p21 expression in HNSCC correlates with intermediate grade, late stage, increased nodal metastasis, tumour recurrence and decreased survival. p21 should be considered as an important prognostic and predictive marker in HNSCC to detect tumours at early stage and to improve therapy and prognosis. Key words: Head and neck squamous cell carcinoma, lymph node metastasis, p21, recurrence, survival rate
BackgroundGlomerulonephritis is among the most common and serious non-communicable diseases in the world, and some of them are major causes of chronic kidney disease, which eventually leads to kidney failure. In developing countries, it is the most common cause of end-stage renal disease (ESRD). Chronic kidney disease affects 10-16% of the adult population in Asia, including 21.2% in Pakistan. This study aims to determine the frequency and spectrum of glomerulonephritis at our center. MethodologyThis is a cross-sectional analysis of 81 renal core biopsies obtained between August 2020 and August 2021. The histopathological reports, demographic data, and relevant laboratory investigations, such as blood urea and creatinine levels, were collected. All cases were blindly reviewed by two pathologists with a special interest in medical renal pathology. Data were analyzed using SPSS version 22 (IBM Corp., Armonk, NY, USA). ResultsThe majority of the patients (46.9%) were between the ages of 21 and 40 years. There was a slight male predominance, with 44 (54.3%) of the 81 participants being male. Hematuria was reported in 20 (24.7%) patients, with mean serum urea and creatinine levels of 75 mg/dL and 2.6 mg/dL, respectively. Nephrotic syndrome was the most common indication for a renal biopsy, accounting for 54 (67.7%) of the 81 cases. Chronic glomerulonephritis is classified into two categories, namely, primary and secondary glomerulonephritis. Focal segmental glomerulosclerosis (FSGS), the leading cause of primary glomerulonephritis, was found in 25 (30.9%) 81 patients. Furthermore, lupus nephritis (9.9%) and advanced glomerulonephritis (9.9%) were found in equal proportions among secondary glomerulonephritis. ConclusionsAccording to our study, nephrotic syndrome was the most common indication for medical renal biopsy, with FSGS being the most common primary glomerulonephritis. Lupus nephritis and advanced glomerulonephritis were the most common secondary glomerulonephritis diagnoses.
IntroductionAlthough the cytology of effusion fluids is considered a routine laboratory test, it has recently emerged as an essential tool in determining the primary site of origin of carcinoma of unknown primary. The sensitivity for diagnosing malignancy has enhanced with the inclusion of cytospin, cell block (CB), and immunohistochemistry (IHC) to effusion fluid cytology due to the improvement in morphological preservation and good cellular yield. The purpose of this study was to assess the diagnostic yield, sensitivity, specificity, positive predictive value, and negative predictive value of IHC and CB in effusion cytology. MethodologyAn institution-based cross-sectional study was conducted over a period of six months on 150 cases of effusion fluids submitted for diagnostic purposes. After the preparation of cytospin, the residual amount of centrifuged deposit was mixed with CytoLyt solution, thrombin, and plasma, and CBs were prepared. IHC was applied to the CB. Calretinin was used for mesothelial cells, and BerEP4, TTF-1, ER, WT-1, and CD-X2 were used for the confirmation and origin of malignant cells. ResultsThe mean age of the patients was 51.75 ± 16.63 years. The male-to-female ratio was 1:1.24. Out of 150 cases, 78 were pleural effusions, 68 were peritoneal effusions, and four were pericardial effusions. Out of 150 cases, based on cytological examination alone, 66 (44%) were classified as benign, 27 (18%) as malignant, and 57 (38%) were suspicious for malignancy. When cytology was combined with CB and IHC, the diagnostic yield was increased to benign 95 (63.33%), malignant 48 (32%), and suspicious for malignancy 7 (4.67%). The most common cause of malignant pleural effusion was breast carcinoma in females and lung carcinoma in males. The most common primary tumor in malignant peritoneal effusion was ovarian carcinoma in females and colonic adenocarcinoma in males. The sensitivity and specificity of combined cytology with cell block and IHC were 92.31% and 98.95%, respectively. This combination produced significantly better results (pvalue = 0.001) for detecting malignancy and reduced suspicious cases from 38% to 4%. ConclusionCB, in combination with IHC, increases the diagnostic yield and aids in detecting malignancy at an unknown primary site in effusion fluids. Both of these techniques can thus enhance the sensitivity and specificity of the diagnosis of effusion cytology. Hence, CB and IHC have advanced utility over cytological smears in effusion fluid cytological diagnosis.
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