[Bone mineralization in adolescents suffering from postnatal malnutrition]. / Mineralización ósea en adolescentes que padecieron desnutrición postnatal temprana.

The bone mineralization of 6 male and 18 female adolescents with a mean age of 12 years and 11 months, who had suffered severe, early, postnatal protein-energy undernutrition, was analyzed. These patients have been followed up at our Institute since their nutritional rehabilitation. Bone mineralization was measured by bone dual isotopic densitometry (Gd 153). These results were compared with those of normal school-age Chilean children of the same age and sex. Weight for height of adolescent who had suffered from undernutrition was similar to the controls, and both were over 100% of the standard. Adequation of height for age was significantly less in those with previous history of undernutrition. Densitometries showed that adolescents with a past history of undernutrition had lower total bone mass in whole body, spine and femoral neck; differences disappeared when expressed per 100 cm of body height. There were no differences in bone mineral density in the different area measurements. It is concluded that the possible alterations that undernutrition produces in bone mineralization probably recover after nutritional rehabilitation, adequate nutritional follow up and health support.

[Primary hyperparathyroidism caused by a mediastinal adenoma with intermittent hypercalcemia and severe bone disease]. / Hiperparatiroidismo primario por adenoma mediastínico, con hipercalcemia intermitente y enfermedad ósea acentuada.

We report the case of a 33-year-old woman who was operated on with the diagnosis of primary hyperparathyroidism (PHP) in 1986. She had bone disease and slight hypercalcemia. Two parathyroid glands were removed with a lack of clinical improvement. Subsequently, the serum calcium levels were normal with occasional slight increases. Depressed phosphorus values and elevated alkaline phosphatases and PTH levels were also present, associated with severe bone involvement and muscular weakness. A second cervical exploration performed in 1989 disclosed only a normal parathyroid gland, which was not removed. In 1990, a thoracic CT scan showed the presence of a 1 cm mediastinal nodule close to the great vessels. A thoracotomy was performed to remove this nodule, which proved to be a parathyroid adenoma. After surgery, the patient presented with a "hungry bone" syndrome, characterized by very low levels of calcium, phosphorus and magnesium, which required enteral and parenteral calcium and magnesium supplements, plus dihydroxyvitamin D. The association of normocalcemia and intermittent hypercalcemia with severe bone disease is very rare, as is the presence of a mediastinal adenoma. This could explain the difficulty in the diagnosis in this case.

[Treatment of anorexia nervosa]. / Tratamiento de la anorexia nerviosa.

Treatment of anorexia nervosa integrates psychiatric and medical aspects. Elements of analytically oriented (not true psychoanalysis) and behavioral forms of psychotherapy are utilized. Emphasis should be placed in the setting, patient-therapist relation, and alliance with the family. Weight gain is the gauge and one of the goals of the therapy, having in mind that as it increases anxiety may be generated. From a behavioral point some restrictions are indicated. Antipsychotic (or neuroleptic) and antidepressant drugs should be used. Haloperidol is the drug of choice among antipsychotics while amitriptyline is usually preferred as antidepressant. General medical measures include adequate nutritional support, limitation of physical activity, eventual supplementation with iron, folic acid and vitamin B12. Estrogen therapy associated to progestins, calcium and vitamin D should be considered to prevent osteopenia.

[Nutritional study of alcoholics with specific reference to calcium and phosphorus]. / Estudio nutricional en alcohólicos con particular referencia a calcio y fósforo.

We performed a nutritional study of 80 alcoholic males at least 15 days after an acute episode of alcoholic intake. 43 patients were intermittent drinkers with mean age 37.9 years and 37 patients were continuous drinkers with mean age 440.30 healthy subjects were studied as controls. Body mass index was 23.7 (range 19.2-37.9) in intermittent drinkers compared to 23.1 (range 18.1-29.8) in continuous drinkers (NS). Wine was the main alcoholic beverage in 70% and 89%, respectively. Mean daily alcohol intake was 170 g for 17 years and 358 g for 23 years, respectively. Mean caloric intake and % of calories from alcohol were 3387 and 42% for intermittent compared to 4271 and 66% for continuous drinkers, respectively. Daily calcium intake was 757 g and 774 g in each group. Alcoholic beverages supplied 16% and 34% of calcium intake, respectively. The intake of phosphorus was adequate. Alcoholic subjects did not manifest anemia or hypoalbuminemia, compared to controls. The present study fails to disclose significant caloric and protein undernutrition in alcoholic subjects. However, the intake of calcium is inadequate and a high percentage of it is provided by alcoholic beverages. This deficiency in conjunction with alcoholic damage to intestinal mucosa may lead to osteopenia in alcoholic patients.

[Hematologic changes in anorexia nervosa]. / Las modificaciones hematológicas en la anorexia nerviosa.

We studied the hematologic values of 25 patients with anorexia nervosa. Age ranged from 12 to 38 years and 22 were females. Mean hematocrit was decreased to 36% and total leukocyte count to 4.400/microliters. Anemia was diagnosed in 13 patients. It was normocytic in 7 hypochromic microcytic in 7 and megaloblastic in 2. Seven of these anemic patients corrected their anemia with the treatment of anorexia nervosa, 3 required iron supplement and 2 folic acid. Bone marrow studies in 23 patients demonstrated hypoplasia in 17. Four patients had global bone marrow hypoplasia with decreased numbers of erythroblasts and megakaryocytes. A mucopolysaccharide substance substituted for a decreased fat content of bone marrow. A decreased bone marrow reserve of neutrophils and their margination in blood vessels contributed to leukopenia, which was not associated to an increased number of infections. Blood coagulation tests and platelet aggregation were normal.