psammoman.

Brit.

/(p)səˈməʊmə/, U.S.

/(p)səˈmoʊmə/

Inflections: Plural psammomas, psammomata.

Origin: A borrowing from German. Etymon: German Psammoma.

Etymology: < German Psammoma ( R. Virchow Die krankhaften Geschwülste (1864–5) II. 108; now Psammom ) < ancient Greek ψάμμος sand (see psammo- comb. form) + German -oma -oma comb. form.

Pathology. Now rare.

A tumour, esp. a meningioma, containing rounded, laminated, calcified concretions resembling grains of sand.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of internal organs > disorders of nervous system > [noun] > disorders of brain > brain tumour

testudoc1400

Talpa1684

glioma1870

psammoma1872

myxoglioma1878

gliomatosis1886

gliosis1892

cephalhaematoma1900

meningioma1922

medulloblastoma1925

glioblastoma multiforme1926

space-occupying lesion1937

neuroglioblastoma1985

1872 Lancet 12 Oct. 516/2 The three sources from which tumours in the nervous centres may be derived are (a) the free surfaces of the dura mater and arachnoid (e.g. Pacchionian granulations,..myxoma and psammoma of the spinal dura mater); [etc.].

1899 T. C. Allbutt et al. Syst. Med. VIII. 241 Occasionally psammomata are found attached to the choroid plexuses.

1924 R. Muir Text-bk. Pathol. vi. 174 Not infrequently, there is a considerable amount of calcification in the growth, hence the term psammoma, or brash-sand tumour has been applied.

1997 Surg. Neurol. 47 375/1 There were three angioblastic meningiomas and four psammomas.

Compounds

psammoma body n. a small, rounded, laminated, calcified concretion, found esp. in certain types of tumour.

ΚΠ

1896 A. Bruce tr. R. Thoma Text-bk. Gen. Pathol. ix. 404 Psammoma granules are very calcareous concretions, concentrically laminated, and sometimes also showing radial striation.]

1901 Lancet 23 Feb. 556/2 Both these tumours only contained fibrous tissue in addition to the psammoma bodies.

1970 Endocrinology 87 245 (title) Iodine concentration in Psammoma bodies in the thyroids of rats fed an iodine-deficient diet for long periods.

1997 Japanese Jrnl. Clin. Oncol. 27 193 We report a case of papillary adenocarcinoma of the sigmoid colon with psammoma bodies and intracytoplasmic hyaline globules.

Derivatives

psaˈmmomatous adj. of, relating to, or characteristic of a psammoma; of the nature of or containing psammoma bodies.

ΘΚΠ

the world > health and disease > ill health > a disease > growth or excrescence > [adjective] > tumour > other tumours

sublated1647

polypous1684

polypose1722

extravasate1728

flatulent1730

primary1793

mammary1804

osteosarcomatous1825

polypoid1827

carcinoid1830

homoeomorphous1832

melanoid1839

polypiform1846

tyromatous1848

non-malignant1852

extravasated1853

adenomatous1863

histioid1864

histoid1865

myxomatous1872

small-cell1872

lymphadenomatous1873

polypoidal1873

lymphomatous1876

myomatous1876

lympho-sarcomatous1880

haematomatous1886

fibro-lipomatous1889

teratomatous1891

mixed1892

fibro-adenomatous1894

psammomatous1897

tunnelled1898

mycosic1899

radioresistant1922

melanomatous1943

sarcoid-like1943

paragangliomatous1965

oncofetal1972

1897 Lancet 20 Feb. 516/2 I am of the opinion that these tumours [sc. psammoma and cylindroma] do not constitute a special class, and that if the terms are to be used at all they should be employed in the adjectival form, such as ‘psammomatous sarcoma’, ‘psammomatous glioma’, ‘cylindromatous endothelioma’, etc.

1919 J. Ewing Neoplastic Dis. xx. 309 In other tumors of nerve-trunks the structure is that of typical perivascular endothelioma as occurring in the dura mater, and psammomatous changes may appear in them.

2005 Clin. Neurol. & Neurosurg. 107 264/2 The pathological diagnosis for intradiploic and intraaxial lesions were epidermoid tumour and psammomatous meningioma, respectively.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	psammoma
释义	psammoman. Brit. /(p)səˈməʊmə/, U.S. /(p)səˈmoʊmə/ Inflections: Plural psammomas, psammomata. Origin: A borrowing from German. Etymon: German Psammoma. Etymology: < German Psammoma ( R. Virchow Die krankhaften Geschwülste (1864–5) II. 108; now Psammom ) < ancient Greek ψάμμος sand (see psammo- comb. form) + German -oma -oma comb. form. Pathology. Now rare. A tumour, esp. a meningioma, containing rounded, laminated, calcified concretions resembling grains of sand. ΘΚΠ the world > health and disease > ill health > a disease > disorders of internal organs > disorders of nervous system > [noun] > disorders of brain > brain tumour testudoc1400 Talpa1684 glioma1870 psammoma1872 myxoglioma1878 gliomatosis1886 gliosis1892 cephalhaematoma1900 meningioma1922 medulloblastoma1925 glioblastoma multiforme1926 space-occupying lesion1937 neuroglioblastoma1985 1872 Lancet 12 Oct. 516/2 The three sources from which tumours in the nervous centres may be derived are (a) the free surfaces of the dura mater and arachnoid (e.g. Pacchionian granulations,..myxoma and psammoma of the spinal dura mater); [etc.]. 1899 T. C. Allbutt et al. Syst. Med. VIII. 241 Occasionally psammomata are found attached to the choroid plexuses. 1924 R. Muir Text-bk. Pathol. vi. 174 Not infrequently, there is a considerable amount of calcification in the growth, hence the term psammoma, or brash-sand tumour has been applied. 1997 Surg. Neurol. 47 375/1 There were three angioblastic meningiomas and four psammomas. Compounds psammoma body n. a small, rounded, laminated, calcified concretion, found esp. in certain types of tumour. ΚΠ 1896 A. Bruce tr. R. Thoma Text-bk. Gen. Pathol. ix. 404 Psammoma granules are very calcareous concretions, concentrically laminated, and sometimes also showing radial striation.] 1901 Lancet 23 Feb. 556/2 Both these tumours only contained fibrous tissue in addition to the psammoma bodies. 1970 Endocrinology 87 245 (title) Iodine concentration in Psammoma bodies in the thyroids of rats fed an iodine-deficient diet for long periods. 1997 Japanese Jrnl. Clin. Oncol. 27 193 We report a case of papillary adenocarcinoma of the sigmoid colon with psammoma bodies and intracytoplasmic hyaline globules. Derivatives psaˈmmomatous adj. of, relating to, or characteristic of a psammoma; of the nature of or containing psammoma bodies. ΘΚΠ the world > health and disease > ill health > a disease > growth or excrescence > [adjective] > tumour > other tumours sublated1647 polypous1684 polypose1722 extravasate1728 flatulent1730 primary1793 mammary1804 osteosarcomatous1825 polypoid1827 carcinoid1830 homoeomorphous1832 melanoid1839 polypiform1846 tyromatous1848 non-malignant1852 extravasated1853 adenomatous1863 histioid1864 histoid1865 myxomatous1872 small-cell1872 lymphadenomatous1873 polypoidal1873 lymphomatous1876 myomatous1876 lympho-sarcomatous1880 haematomatous1886 fibro-lipomatous1889 teratomatous1891 mixed1892 fibro-adenomatous1894 psammomatous1897 tunnelled1898 mycosic1899 radioresistant1922 melanomatous1943 sarcoid-like1943 paragangliomatous1965 oncofetal1972 1897 Lancet 20 Feb. 516/2 I am of the opinion that these tumours [sc. psammoma and cylindroma] do not constitute a special class, and that if the terms are to be used at all they should be employed in the adjectival form, such as ‘psammomatous sarcoma’, ‘psammomatous glioma’, ‘cylindromatous endothelioma’, etc. 1919 J. Ewing Neoplastic Dis. xx. 309 In other tumors of nerve-trunks the structure is that of typical perivascular endothelioma as occurring in the dura mater, and psammomatous changes may appear in them. 2005 Clin. Neurol. & Neurosurg. 107 264/2 The pathological diagnosis for intradiploic and intraaxial lesions were epidermoid tumour and psammomatous meningioma, respectively. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1872
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