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Biomedical subjects

D Chitayat

Publications and source records attributed to D Chitayat.

164 records · Page 10Linked to original sources

Peters' anomaly: a clinicopathologic study.

Two infants were born with bilateral Peters' anomaly. The first baby was a girl, born prematurely at 35 weeks of gestation and who died 8 days later. The second infant was a boy, born at 38 weeks of gestation, who had severe conotruncal abnormality of the heart. Both babies had distinctive facial dysmorphism and severe central nervous system abnormalities including partial or complete absence of the corpus callosum and cerebral calcifications. Biochemical and genetic investigations showed no abnormalities in either child and there was no family history of genetic disorders. Neither case showed evidence of an intrauterine infection. Postmortem ocular findings in the first infant included bilateral herniation of the ruptured cataractous lens into the posterior corneal defect, iridocorneal adhesions, persistent hyperplastic primary vitreous, and total retinal detachment. The left eye of the second infant was eviscerated at 11 months of age because of recurrent, spontaneous perforation. Pathologic ocular findings included large fragments of lens material adherent to the posterior corneal stroma through a large central defect in Descemet's membrane and endothelium, fibrovascular proliferation of the adjacent corneal stroma, and iridocorneal adhesions.

Cornea↗

Juvenile myelomonocytic leukemia and Noonan syndrome.

A case of juvenile myelomonocytic leukemia (JMML, previously referred to as JCML) in a neonate with Noonan syndrome (NS) is described. The boy presented with bilateral congenital hydrothoraces, nonimmune hydrops, dysmorphic facies, persistent thrombocytopenia, and leukocytosis. The diagnosis of JMML was made on bone marrow cell culture studies. Review of the literature reveals an unusual preponderance of hematologic malignancies, in particular JMML, among patients with NS. Of 40 NS patients admitted to the authors' institution during a 10-year period, there were 4 (10%) with evidence of a monocytic proliferation, which resolved spontaneously. The authors postulate that patients with NS may have an increased incidence of myeloproliferative disorders, which in most cases appears to be benign but may be preleukemic or even lethal.

Adult↗