(a.) Resembling a monster; abnormal; of a pathological growth, exceedingly complex or highly organized.
Example Sentences:
(1) No mesenchymal elements other than muscle, and no indication of possible teratoid origin of this tumor were observed.
(2) When thyroid tissue of teratoid origin is found, surgical removal is advised on account of the malignant potentialities of these tumors.
(3) In a retrospective analysis, we evaluated the occurrence of toxic side effects and the frequency of intra- and postoperative complications in 128 patients with retroperitoneal teratoid bulky tumor.
(4) Mya collected at Dennysville had pericardial mesotheliomas and teratoid siphon anomalies in addition to gonadal neoplasms.
(5) In addition, teratoid medulloepithelioma, a tumor arising from the ciliary epithelium, can contain a rhabdomyoblastic component, often in combination with other heteroplastic elements.
(6) Teratoids developed at the place of implantation are represented by the derivatives of all germ layers, as well as by some organic structures.
(7) A case of teratoid tumor of the oral cavity in the newborn is presented.
(8) Because of its unique morphological appearance, which has never been reported, and its relatively indolent behavior after chemotherapy and radiotherapy, we believe that this is a distinctive primitive teratoid tumor which may be classified as nasal blastoma.
(9) The various histopathological classifications of teratoid lesions have not been discussed in detail either, because for the most part they have been evolved to serve a specific prognostic purpose on either an empirical basis or on certain histogenetic assumptions.
(10) However, some cases may be teratoid in origin, as has been suggested for the analogous lesion in the testis.
(11) An unique case is presented, never mentioned before the world specialized literature, concerning an intraarticular teratoid formation in the knee.
(12) We present a case of a very rare naso-sinusal malignant, teratoid neoplasia, recently called "terato-carcinosarcoma".
(13) The susceptibility of the opossum eye to an ENU-induced intraocular teratoid medulloepithelioma extended over the period from 1 to between 3 and 4 weeks of age and was correlated with the differentiation of the apparent target cell, the nonpigmented ciliary epithelium of the pars ciliaris retinae.
(14) A unilateral teratoid Wilms' tumor was removed 2.5 weeks after the institution of chemotherapy.
(15) The World Health Organisation histological classification of medulloepithelioma was applied, but some problems were encountered, particularly where the presence of heteroplastic brain tissue was used as a criterion for teratoid tumour and where rosettes were used as a criterion for malignancy.
(16) We report a rare tumor of the nasopharynx in the neonate: the teratoid or hairy polyp.
(17) In 33 patients with malignant teratoid testicular tumours, the retro-peritoneal lymph nodes were surgically removed after lymphograms had been carried out.
(18) Dysgenesis of the ovaries and the testes of testicular feminization syndrome should be regarded as likely soil for the development of teratoid tumors.
(19) Since 1955 to 1975 the authors observed one hundred sixty patients with teratoid formations of the pararectal cellular tissue.
(20) In a four-year-old boy a malignant teratoid medulloepithelioma of the ciliary body was removed by means of an 11.0 X 11.0 mm "block excision".
Teratology
Definition:
(n.) That branch of biological science which treats of monstrosities, malformations, or deviations from the normal type of structure, either in plants or animals.
(n.) Affectation of sublimity; bombast.
Example Sentences:
(1) The importance of precocious development for planning teratological studies is emphasized.
(2) Unlike previous studies with 13-cis-retinoic acid during the pre- and early organogenic stages of development (Hummler et al., Teratology 42:263-272, 1990), no thymic hypo- or aplasia or heart anomalies were observed, which may be attributable to the slightly longer 13-cis retinoic acid treatment period, i.e., GD 10-27.
(3) It seems likely that diaphragmatic hernia is a non-specific consequence of several teratological processes.
(4) The principles of teratology are described, and animal models for research in abnormal ocular development and clinical studies of human teratogens are surveyed.
(5) Functional teratology is quite a new concept in neuroscience.
(6) Dams were killed on Day 19 and the fetuses were assessed for teratologic anomalies.
(7) On the basis of findings published in the literature, morphologic changes seen among the author's patients were classified as anthropologic and teratologic dislocations.
(8) The synthesis of these sciences into the relatively nascent science of reproductive toxicology includes teratology, pharmacology, epidemiology, and occupational and environmental health.
(9) In 1652, a chair of anatomy was created; embryology and teratology, at that time solely morphological sciences, depended on anatomy.
(10) No teratological or abortifacient effects were noted.
(11) The elaboration of the effect of retinoic acid on limb morphogenesis has prompted renewed investigation into the teratology of retinoic acid treatment, with the hope that such analysis might give insight into mechanisms of vertebrate patterning.
(12) The first generation (F0) gilts were bred after 4 months of study; some were killed for teratologic assays at 100 days of gestation (dg), and the others produced an F1 generation of offspring.
(13) The results are discussed with particular reference to the evaluation of teratologic studies on food colouring in general and the various regulation proposals from the National Food Administration.
(14) It also illustrates that selected histochemical studies may be helpful in a teratologic investigation.
(15) Subtle functional disturbances in organisms exposed while immature (behavioral teratology) may be one of the most sensitive indicators of chemical toxicity.
(16) N-Ethyl-N-nitrosourea (ENU) was administered intravenously to pregnant Wistar-albino rats on days 14--21 of gestation in order to study the teratological effects of the carcinogen on the developing brain.
(17) Concerning the applied doses no teratological effect was observed.
(18) The developmental toxicity of acetonitrile and 5 halogenated derivatives was examined with an in vivo teratology screen adapted for use in the Long-Evans rat.
(19) A wealth of literature has become available about lasting functional consequences of perinatal psychotropic drug exposure, having affected brain development in a subtle rather than gross structural way (behavioral teratology or functional neuroteratology).
(20) It is suggested that teratological investigations be carried out on the basis of a clearly formulated problem using experimental procedures suited to the biological characteristics of the test substances and of the animals.