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Introduction Lung cancer is one of the leading causes of cancer-related deaths worldwide. It arises from the epithelial cells of the bronchial tree or alveoli and is strongly associated with tobacco smoking, although non-smokers may also be affected due to environmental and occupational exposures. Late …
Introduction Liver cancer is a major global health problem and ranks among the leading causes of cancer-related mortality worldwide. It primarily arises from hepatocytes or bile duct epithelial cells and is frequently associated with chronic liver disease and cirrhosis. The most common form is primary …
Introduction Breast cancer is the most common malignancy among women worldwide and a leading cause of cancer-related mortality. It arises from the epithelial cells of the breast, most commonly from the ducts or lobules. Although predominantly affecting women, breast cancer can also occur in men. …
Introduction Fungal infections represent a growing concern in both immunocompromised and immunocompetent individuals. Conventional identification methods, including culture, microscopy, and biochemical testing, often require several days and may lack sensitivity or specificity for certain opportunistic fungi. Molecular techniques such as PCR and sequencing have improved …
Introduction Microscopy remains one of the cornerstones of clinical mycology, providing a rapid and inexpensive method for the direct detection and preliminary identification of fungi. Comparative microscopy is particularly valuable in distinguishing the morphological features of common clinical fungi, many of which exhibit overlapping clinical …
Evaluate the Clinical Context Sample Collection & Repeatability Microscopy & Direct Detection Quantitative Culture & Sterility of Site Serological & Molecular Evidence Radiological Correlation Practical Interpretation Framework Finding Likely Contaminant Possible Colonizer Likely Pathogen Single isolate from 1 sample ✅ ✅ ❌ Repeated isolation from …
Introduction The Ziehl-Neelsen stain, also known as the Wade-Fite stain, is a modified acid-fast staining technique specifically used to detect Mycobacterium leprae in tissue sections, particularly skin biopsies. It preserves the lipid-rich capsule of M. leprae, which is essential for its identification. It is a …
Introduction Grocott’s Methenamine Silver (GMS) stain is a histochemical staining method primarily used to detect fungi in tissue sections. However, it can also stain certain acid-fast organisms like Mycobacteria, especially in tissue biopsies where standard Ziehl-Neelsen or fluorescent stains may miss them. The technique enhances …