Publications by authors named "Hassan Usman"

Article Synopsis
  • Endometrial cancer is a significant health issue for women worldwide, being the sixth most common cancer and the 14th leading cause of cancer-related deaths, particularly for high-grade tumors like UEC, DEC, and CS.
  • The study analyzed data from 71 patients diagnosed with these aggressive tumors at SKMCH&RC from 2011 to 2022, focusing on clinicopathological characteristics and survival rates using statistical tools like SPSS and Kaplan-Meier analysis.
  • Results indicated that tumors showed significant correlations with factors such as myometrial invasion and lympho-vascular invasion, with a notable 5-year overall survival rate of 59.1% for those diagnosed at an early pathological stage.
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Hepatocellular carcinoma (HCC) is the most common primary liver malignant neoplasm. Multiple risk factors have been identified for several decades for this overly aggressive tumor. HCC is an overly aggressive malignancy with frequent intrahepatic and extrahepatic metastasis.

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Resveratrol, a natural polyphenol in various plants, has gained significant attention for its potential health-promoting properties. It has been demonstrated, after reviewing various clinical and in vitro studies, that resveratrol possesses potent antioxidant potential. Resveratrol demonstrates cellular component protection by directly neutralizing free radicals (FRs) and enhancing the expression of natural antioxidant enzymes, thereby mitigating oxidative damage to proteins, lipids, and nucleic acids.

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Background Round cell sarcomas pose diagnostic challenges due to overlapping histopathological features, necessitating precise immunohistochemical markers for accurate categorization. NKX2.2 has emerged as a sensitive diagnostic tool, particularly in Ewing sarcoma.

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Background Low-grade fibromyxoid sarcoma (LGFMS) and sclerosing epithelioid fibrosarcoma (SEF) are two rare but aggressive soft tissue sarcomas that can be difficult to distinguish due to histopathological similarities. The present study examines the diagnostic capacities of mucin-4 (MUC4), a transmembrane mucin, in identifying different types of sarcomas and broadens its evaluation to include a wide range of sarcomas. Methods Immunohistochemical (IHC) examination of tissue samples from various sarcomas was performed using a mouse anti-MUC4 monoclonal antibody.

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Background: BRCA1 and BRCA2 (BRCA1/2) are the most frequently investigated genes among Caucasian pancreatic cancer patients, whereas limited reports are available among Asians. We aimed to investigate the prevalence of BRCA1/2 germline variants in Pakistani pancreatic cancer patients.

Methods: One hundred and fifty unselected and prospectively enrolled pancreatic cancer patients were comprehensively screened for BRCA1/2 germline variants using denaturing high-performance liquid chromatography and high-resolution melting analyses, followed by DNA sequencing of the variant fragments.

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Objectives: To analyse the clinicopathological characteristics of sinonasal malignancies in the light of the updates regarding head and neck tumours.

Methods: The retrospective study was conducted at the Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan, and comprised data of patients diagnosed with primary malignant tumours of the sinonasal tract between 2015 and 2020. Slides related to biopsies and resection specimens were retrieved from the institutional database and reviewed by two pathologists.

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Fungal rhinosinusitis (FRS) is a relatively common, but often misdiagnosed disease of paranasal sinuses. The FRS is classified into invasive and non-invasive forms. The non-invasive form includes fungal ball and allergic FRS, and invasive form includes acute invasive FRS, chronic invasive FRS, and granulomatous FRS.

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This study utilizes artificial intelligence and statistical modelling to optimize the operating parameters of a carbon-based electro-Fenton process for purifying model dye (RB19)-contaminated wastewater. Multilevel experimental Box-Behnken and uniform deisgns (BBD, UD) with four variables were analysed using polynomial regression analysis (PRA) and artificial neural networks (ANN), while the process optimisation was done using desirability function. For the given testing range but different design matrices and runs, both designs predicted a maximum RB19 removal (RB19-RR) of 90 ± 2.

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Gemistocytic differentiation is a rare histological feature seen in IDH mutant Astrocytomas. The 2021 World Health Organization (WHO) retains the diagnosis of IDH mutant Astrocytoma with its classical histology and tumors with the rare histological pattern of g differentiation.  differentiation has historically been associated with a worse prognosis and shorter survival, and this prognostic difference has not been investigated in detail in our population.

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Objective:  To evaluate the frequency of intraductal component (IDC-P) in prostatic adenocarcinoma and its effect on the final grade using the ISUP and GUPS grading system.

Study Design:  Descriptive study. Place and Duration of the Study: Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, between June 2021 and June 2022.

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Focal segmental glomerulosclerosis (FSGS) is a common renal disorder, characterized by progressive segmental sclerosis of renal glomeruli and clinical symptoms corresponding to proteinuria. Classically, it is not considered to be an antibody-mediated disease, however, IgM and C3 deposition may be seen in a subset of cases of FSGS. The impact of this immune deposition on histopathological features in renal core biopsies, on the urinary biochemical parameters, and the clinical outcomes, has not been previously investigated in our population.

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Background: The updated version of predictive classification for immunoglobulin A nephropathy (IgAN) prognosis "The Oxford Classification" identifies five histopathological features including mesangial hypercellularity (M), endocapillary proliferation (E), segmental glomerulosclerosis (S), tubular atrophy/interstitial fibrosis (T) and crescents (C), the MEST-C. However, few studies suggest that tubulointerstitial inflammation, which is not included in the MEST-C, is also linked to disease progression and is, consequently, a neglected determinant of prognosis among others. Therefore, there is a need to evaluate this histopathological parameter in patients with IgA nephropathy.

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Background: The outbreak of coronavirus disease 2019 (COVID-19) has emerged as a serious public health emergency of global concern. Angiotensin converting enzyme 2 (ACE2) peptidase domain is important for the cellular entry of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Germline variants in ACE2 peptidase domain may influence the susceptibility for SARS-CoV-2 infection and disease severity in the host population.

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Background Malignant melanoma is a common cancer in Scandanavian countries due to increased exposure to ultraviolet light. Very limited data is available on malignant melanomas in Pakistani population and further studies are needed to determine its incidence in our population. Objective The main objective of our study was to determine histopathological characteristics and prognosis of malignant foot melanomas in Pakistani patients.

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Purpose: Our study aimed to determine the prognostic significance of minor high-grade components (HGC) in non-invasive papillary urothelial carcinomas compared with pure low-grade and high-grade tumors.

Material And Methods: We retrospectively retrieved 273 in-house cases of non-invasive papillary urothelial carcinomas (pTa) from 2016 to 2018 for which follow up data was available in hospital archives. We stratified our data into four main groups (G).

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Background Angiomatoid fibrous histiocytoma (AFH) is a rare soft tissue neoplasm of uncertain differentiation, which has various clinical and morphological presentations. Although it behaves in a benign manner, it has malignant potential. Aim To share various histological patterns and survival data in our population of this rare entity.

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Background: Partner and localizer of BRCA2 (PALB2) is a pancreatic cancer (PC) susceptibility gene reported in Caucasians. However, limited data are available among Asians. We investigated the contribution of PALB2 germline variants to Pakistani PC patients.

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Article Synopsis
  • The study investigates the cytotoxic effects of the trypan blue dye on the freshwater fish Cirrhinus mrigala by exposing them to various concentrations (5 mg/L, 10 mg/L, and 20 mg/L) of the dye in an aquarium setting.
  • Results showed a significant weight decrease in fish exposed to higher concentrations (10 mg/L and 20 mg/L), indicating a negative impact on their health.
  • Histopathological analysis revealed serious liver and kidney damage, such as tissue congestion, necrosis, and inflammation, suggesting that even small amounts of trypan blue can be highly toxic and serve as an indicator for contamination by azo dyes in aquatic environments.
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Background: BAP1 (BRCA1 associated protein 1 on chromosome 3) is a commonly mutated gene in clear cell renal cell carcinoma. Aim of the study was to evaluate the prognostic significance of BAP1 by immunohistochemistry in clear cell renal cell carcinoma.

Methods: It was a descriptive case series in which data was retrospectively collected.

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Objective: To determine accuracy of cytological diagnosis in comparison with the corresponding histopathological diagnosis of thyroid lesions.

Methods: The retrospective study was conducted at the Shaukat Khanum Memorial Cancer Hospital, Lahore, Pakistan, and comprised data from January to December 2017 of all in-patient cases of thyroid cytology with their histopathological diagnosis. Both Haematoxylin and Eosin stain slides and cytological smears were reviewed.

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Background: The 2013 World Health Organization (WHO) classification of soft tissue and bone tumours recognizes benign entities such as lipoma and four major liposarcoma subtypes: atypical lipomatous tumour/well differentiated liposarcomas (ALT/WDL), dedifferentiated liposarcomas (DDL), myxoid liposarcoma and pleomorphic liposarcoma. This classification of atypical and malignant adipocytic tumours has evolved significantly over the past few decades owing to contributions from cytogenetics, molecular genetics and Immunohistochemical correlates. Most ALT/WDLs can be diagnosed on histology; however, some of the biopsies may be underdiagnosed due to focal atypia or limited nature of tissue for the biopsy.

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Background: Diabetes mellitus has become a major emerging health concern. Its burden, estimated to be 451 million in 2017, has been projected to rise to 693 million by 2045. This will bring a rise in the prevalence of its associated complications.

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