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Apocrine-like cells form in a lining of developing microcysts, due to the pressure buildup within the lumen. The pressure build up is caused by secretions. [ 5 ] This type of metaplasia represents an exception to the common rule of metaplasia increasing the risk for developing cancer in that apocrine metaplasia doesn't increase the possibility ...
Micrograph showing apocrine metaplasia of the breast with typical features [3] H&E stain. Barrett's esophagus is an abnormal change in the cells of the lower esophagus, thought to be caused by damage from chronic stomach acid exposure. The following table lists some common tissues susceptible to metaplasia, and the stimuli that can cause the ...
Micrograph showing apocrine-type metaplasia of the breast with typical oncocytes. [2] H&E stain. Oncocytes (left of image), as seen in a renal oncocytoma. H&E stain. An oncocyte is an epithelial cell characterized by an excessive number of mitochondria, resulting in an abundant acidophilic, granular cytoplasm. Oncocytes can be benign or malignant.
The lesions must also show that tumor cells have broken through their ducts of origin to invade adjacent tissue in at least one area. Most of the tumor cells (termed type A cells [15]) typically appear somewhat more irregular than normal apocrine gland cells.
Cellular atrophy is a decrease in cell size. If enough cells in an organ undergo atrophy the entire organ will decrease in size. Thymus atrophy during early human development (childhood) is an example of physiologic atrophy. Skeletal muscle atrophy is a common pathologic adaptation to skeletal muscle disuse (commonly called "disuse atrophy").
Micrograph showing apocrine metaplasia of the breast with typical features [5] H&E stain. The exact mechanism of the condition is not fully understood, though it is known to be tied to hormone level fluctuation; the condition usually subsides after menopause and is closely related to the menstrual cycle.
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