Today, more recent explanations for the origin of the bone tissue attribute the ossification to a metaplastic
Moreover, in the exposed subjects we found a distinct increase in metaplastic
squamous cells, partly associated with dysplasia, and in dysplastic columnar cells (Figure 1).
It has other variants like xanthogranulomatous types, Granulomatous cystitis, metaplastic
changes and malakoplakia (23) are also noted.
Diminished number or complete loss of myoepithelialcellassociatedwith metaplastic
andneoplastic apocrine lesions of the breast.
Although pathogenesis and cell of origin of metaplastic
breast cancer (MpBC) is still not completely clear, it has been claimed to be of myoepithelial origin.
The histogenesis of tumor is unclear; it can arise from epidermoid cyst of breast, chronic abscesses or from metaplastic
An adequate smear was defined as one containing squamous cells, endocervical cells, and any metaplastic
cells representative of the transformation zone, Dr.
These include adequacy of sampling from the transformation zone as indicated by the presence of columnar or metaplastic
cells, thickness of smear, and number of cells.
Basil Morson from London, United Kingdom, perhaps the best known and revered gastrointestinal pathologist of the mid to late twentieth century, used the term metaplastic
polyp in 1962 for what we now call hyperplastic polyps in order to distinguish them from true adenomatous proliferations.
The hypertrophied ductal openings of minor salivary glands act as portal of entry for tobacco smoke and the pseudostratified columnar epithelial lining of ducts is found to undergo squamous metaplasia in response to chronic irritation caused by heat and chemicals released during reverse smoking and this metaplastic
squamous epithelium has got high malignant potential and may be responsible for malignancy in this component.
Besides, 85 (85%) cases were of Infiltrating ductal carcinomas (IDC) NOS, (not otherwise specified); 06 (6%) were Infiltrating lobular carcinoma (ILC); 3 (3%) were Metaplastic
carcinoma (MC) and 2 (2%) were found to be Tubulolobular.