[Malignant non-Hodgkin conjunctival-orbital lymphoma in the years 1990-2005 at the Ophthalmology Clinic of Oradea].

Non-Hodgkin conjunctival-orbital Malignant Lymphoma, there are rare tumors, difficult to be diagnosed. We've made a clinical and paraclinical retrospective study, along 15 years (1990-2005) period of time, analyzing from the point of view, clinical features and anatomo-pathological results, each of the 11 cases that we found.

Choroidal melanocytes and associated pathology.

The embryologic origins of choroidal and cutanoeus melanocytes, also of the genes involved in cutaneous and choroidal melanoma, are identical, even the two kinds of tumors are different entities. This is a general scientific report, which stretches the molecular mechanisms, as basement of choroidal melanocytes proliferation.

[THe etiology of pleuropneumopathies in infants and small children].

In a follow-up study during 20 years (1975-1994) we observed, beside clinical aspects, the evolution of pleuropneumopathies in infants and small children (1-3 years of age), and the etiology of these infections. The casuistry includes 456 children-237 infants (51,97%) and 219 small children, between 1-3 years of age (48,02%), which were admitted in Clinical Children's Hospital from Oradea (Clinical Hospital for Children) with pleuropneumopathies. 4 intervals of time were analyzed comparatively, each of 5 years, starting with a number of 235 cases in the first one and reaching only 45 observations in the last one.

[Enterobacteria of the genera Salmonella, Shigella and Yersinia with an etiological role in acute diarrheal disease].

In a study made during 5 years, from 1990 to 1994 on 8363 subjects with acute diarrhoea disease, we found 486 cases (5,81%) in which the etiologic agent was belonging to a species of enterobacteria; as follows: Shigella (69,13%), Salmonella (27,78%) and Yersinia enterocolitica (3,08%), and which were isolated predominantly in children with ages ranging from 6 months to 7 years. The serogroups of Shigella most often isolated were Shigella sonnei, in 196 patients (35,11%). Regarding the cases with Salmonella, in most of the cases Salmonella enteritidis was isolated (60,74%) followed by Salmonella typhimurium and other Salmonellae from the serogroup BO (23,70%).