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Biomedical subjects

A Yousuf

Publications and source records attributed to A Yousuf.

8 recordsLinked to original sources

Removal of gingival melanin pigmentation with the semiconductor diode laser: a case report.

OBJECTIVE: This investigation was performed to evaluate the possibility of the removal of canine gingival melanin pigmentation with the semiconductor diode (SCD) laser in vivo. SUMMARY BACKGROUND DATA: Recently, a semiconductor laser, which can ablate soft tissue, has been developed. It is already used in dentistry as well as in medicine. METHODS: The SCD laser was irradiated on the pigmented area of canine gingival surface with the irradiation output of 3W. The effect of the SCD laser irradiation was evaluated at the two intervals: immediately after irradiation and at 3 weeks following irradiation. In addition, histological examination was performed before irradiation and at the same intervals from the biopsies (4 microm) of unlased and lased areas. RESULTS: The SCD laser was effective in removing melanin pigmentation. In histological examination, neither inflammatory cell nor any tissue damage was observed with hematoxylin-eosin staining. At 3 weeks, there was a continuous healing process with the proliferation of squamous epithelial cells. CONCLUSIONS: SCD laser irradiation can be considered an alternative procedure for removal of melanin pigmentation.

Animals↗

Histoplasmosis of the small bowel in patients with AIDS.

Two cases of jejunal strictures caused by Histoplasma capsulatum in AIDS patients are presented. Both patients were intravenous drug abusers. One patient, who was being treated for Pneumocystis carnii pneumonia, presented with jejunal perforation and the other presented with lower gastrointestinal bleeding and intestinal obstruction. On exploration, both patients were found to have jejunal strictures; one had intestinal perforation, and the other had intestinal obstruction with ulcers and strictures resulting in gastrointestinal bleeding. In areas where it is endemic, histoplasmosis is rarely disseminated. Dissemination is most commonly seen in immunosuppressed patients. Dissemination and extrapulmonary histoplasmosis is now included in the case definition of AIDS.

AIDS-Related Opportunistic Infections↗

Laparoscopic accessory splenectomy in recurrent chronic immune thrombocytopenic purpura.

Splenectomy is the definitive treatment for most cases of idiopathic thrombocytopenic purpura (ITP). We present the case of a patient who was discovered to have ITP at age 5 and was treated medically for 3 years with decreasing response to medication. At age 8, he underwent splenectomy, after which the platelet count stabilized at approximately 200,000/mm3. Two years later he again had symptoms of thrombocytopenia and was treated medically with moderate success. At age 12, during hospitalization for bleeding, his liver/spleen scan gave negative results. Symptoms persisted, and when the patient was 13 a second scan found two small areas of uptake in the area of the splenic bed suggestive of secondary accessory splenic activity. The platelet count at that time was 6,000/mm3. Laparoscopy was performed, and after careful dissection of the left-upper quadrant, two globular masses, the larger of which was 3 x 2 x 2 cm, were removed without incident. The latest platelet count, 3 months after laparoscopic secondary accessory splenectomy, was 169,000/mm3, and a follow-up scan shows no uptake in the area of the spleen.

Child, Preschool↗

[Treatment and late results of fractures of the distal end of the upper arm in childhood].

74 children suffering from different types of supracondylar fractures of the upper arm underwent conservative and 32 surgical treatment. The follow-up took place 2 to 9 years after the accident. In a percentage of 98 there were very good results of conservative treatment, only 2% were satisfactory.--In the surgically treated group (19 children were followed up) the results were excellent till good in 15 cases, satisfactory in 3 cases and bad in one case.

Adolescent↗