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Diffuse alveolar damage (DAD): an acute lung condition with the presence of hyaline membranes. [2] These hyaline membranes are made up of dead cells, surfactant , and proteins. [ 1 ] The hyaline membranes deposit along the walls of the alveoli, where gas exchange typically occurs, thereby making gas exchange difficult.
It is also in perivascular, peribronchial and even interstitial areas in the lower airways of the lung. [3] To call it BALT it has to be structured accumulation of lymphocytes and other immune cells. There are lymphoid follicles with apparent germinal centres with most B-cells surrounded by T-cell area.
To confirm the diagnosis, a doctor may perform a lung biopsy using a bronchoscope. Many times, a larger specimen is needed and must be removed surgically. Plain chest radiography shows normal lung volumes, with characteristic patchy unilateral or bilateral consolidation. Small nodular opacities occur in up to 50% of patients and large nodules ...
Combined small cell lung carcinoma (or c-SCLC) is a form of multiphasic lung cancer that is diagnosed by a pathologist when a malignant tumor, arising from transformed cells originating in lung tissue, contains a component of small cell lung carcinoma (SCLC) mixed with one or more components of any histological variant of non-small cell lung carcinoma (NSCLC) in any relative proportion.
Respiratory bronchiolitis is a lung disease associated with tobacco smoking. [1] In pathology, it is defined by the presence of "smoker's macrophages". [1] When manifesting significant clinical symptoms it is referred to as respiratory bronchiolitis interstitial lung disease (RB-ILD). [1]
Histopathology of a case of chronic pulmonary congestion, showing a siderophage (white arrow, characterized by coarse brown pigment, which is slightly refractile), and interstitium with edema, hemosiderin deposition (black arrow) and collagenous thickening.
Approximately 98% of lung cancers are carcinoma, a term for malignant neoplasms derived from cells of epithelial lineage, and/or that exhibit cytological or tissue architectural features characteristically found in epithelial cells. [8] Under WHO-2004, lung carcinomas are divided into 8 major taxa: [1] Squamous cell carcinoma; Small cell carcinoma
The xanthogranulomatous type of inflammation is most-commonly seen in pyelonephritis and cholecystitis, although it has more recently been described in an array of other locations including bronchi, lung, endometrium, vagina, fallopian tubes, ovary, testis, epididymis, stomach, colon, ileum, pancreas, bone, lymph nodes, bladder, adrenal gland, abdomen and muscle. [5]