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Related to psammoma: psammoma body
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Noun1.psammoma - a tumor derived from fibrous tissue of the meninges or choroid plexus or certain other structures associated with the brain; characterized by sandlike particles
neoplasm, tumor, tumour - an abnormal new mass of tissue that serves no purpose
References in periodicals archive ?
Nasopharyngeal papillary adenocarcinoma may appear grossly as an exophytic, nodular, or polypoid mass, sometimes gritty if psammoma bodies are present.
Psammoma bodies and/or foamy macrophages may be present.
Psammoma bodies may be present, but they are not distinguishing features of endometrial serous carcinoma.
1) The pathognomonic histopathologic feature of the psammomatous type is the presence of spherical ossicles, which are similar to psammoma bodies.
Psammoma bodies and cytoplasmic yellow bodies were absent.
In histopathology, micro-calcification is thought to represent psammoma bodies, which are 10-100 um round laminar crystalline calcific deposits.
Occasionally, metastases to the breast demonstrate features that lead the pathologist to a correct diagnosis, such as cells with nuclear grooves, intranuclear inclusions, powdery chromatin and psammoma bodies as seen in our case.
No psammoma body is seen, and brain tissue is also seen, which is separated with tumor by pia meter.
Also, psammoma bodies found in the Pap smear are suggestive of gynaecologic malignancy, and more detailed examination is required.
Numerous psammoma bodies, squamous metaplasia, and marked sclerosis were the criteria used to diagnose the diffuse sclerosing variant of PTC (DSVPTC) [14].
Histopathological investigations of the mass showed a cystic neoplasm composed of various mature tissue components including skin, pilosebaceous glands, well-developed respiratory and gastric epithelium, and glial tissue with numerous psammoma bodies.