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Biomedical subjects

B Colombo

Publications and source records attributed to B Colombo.

At least 109 records · Page 6Linked to original sources
PubMedDate not supplied

[Acute hemolytic anemia due to autoantibodies with cholelithic complication. Echotomographic diagnostic importance in a case report].

While the cholelithiasis is very common among chronic hemolytic anemia, it is not in acute. A case of cholelithiasis as a complication of autoimmune acute hemolytic anemia in a 5 years old child is reported. A specific and accurate diagnosis was readily made with grey-scale ultrasound. Serial sonograms were obtained to follow the resolution of this case.

Acute Disease↗
PubMedDate not supplied

[Primary intestinal lymphangiectasis. A case treated surgically].

The authors describe a rare case of primary intestinal lymphangiectasis resolved with surgical treatment. Usually the natural course of the disease is relatively mild and medical nutritional treatment can be sufficient. In this case the lymphatic intestinal anomaly was generalized to the entire small intestine but a distal ileal segment was particularly involved. The surgical resection of this intestinal tract resolved the symptomatology.

Age Factors↗
PubMedDate not supplied

Non-productive or thalassemic-like heavy-chain gene rearrangement in a K-chain CLL clone.

Information obtained from the study of immunoglobulin (Ig) gene rearrangement in different types of lymphoproliferative disorders has led to the suggestion that Ig gene activation obeys a precise hierarchy in which heavy-chain gene rearrangement procedes light-chain gene recombination. However no information is available on the mechanism(s) controlling this sequential activation. We report here a case of CLL which suggests that the expression of the heavy-chain genes is not necessary for light-chain gene rearrangement, or that very low amounts of heavy-chain mRNA and/or heavy chains are sufficient to activate k-chain genes.

Aged↗
PubMedDate not supplied

[Hydronephrosis in childhood. Long and mid-term morphologic and functional results].

Hydronephrosis in infancy and childhood is a frequent urinary malformation and is almost always congenital. In over 80% of the cases it is due to ureteropelvic junction obstruction; in about 17%, anomalous renal vessels at the ureteropelvic junction are present. The authors analyze their experience in the surgical treatment of hydronephrosis. 360 hydronephrosis out of 335 patients were operated on from November 1971 to November 1988. 108 patients were less than 1 year old (32.2%). Primary nephrectomy was carried out only in 11 of the 360 hydronephrosis operated on (about 3%). An anterior approach and a simple dismembering pyeloplasty were performed in the majority of the cases. From the radiological point of view there was an impressive amelioration or normalization in about 92% of the cases operated on. From the functional point of view the radionuclide scan showed a normal or slightly reduced renal function in almost 90% of the cases operated on. The preoperative and postoperative radionuclide study showed a moderate increase of the renal function in the majority of the cases controlled. The authors stress the importance of prenatal ultrasound diagnosis to improve long term results of an early surgical treatment.

Child↗
PubMedDate not supplied

[Post-necrotizing enterocolitis stenosis of the colon associated with cytomegalovirus infection. Description of a clinical case].

We report a case of an infant with a post-necrotizing enterocolitis stenosis, resolved with operative measures. The histologic finding of Cytomegalovirus in the resected sigmoid colon rise the question if the intestinal stricture was the proper consequence of a primary enteric viral infection or a superinfection in a transitory immunodeficiency after the acute phase of necrotizing enterocolitis.

Colonic Diseases↗
PubMedDate not supplied

[Surgery of malformations of extrahepatic bile ducts in childhood].

The actual hypothesis on the etiology and pathogenesis of neonatal hepatitis, intrahepatic and extrahepatic biliary atresia and choledocal cyst is that these disorders can be different results or permissible outcomes of a single basic process: infantile obstructive cholangiopathy. This hypothesis can explain the failure of many infants with operable extrahepatic biliary atresia to do well following surgically successful anastomosis. Very possibly no surgical mode of therapy will cure a significant fraction of infants with biliary atresia (correctable and non-correctable types) because the basic disease process actually produces portal fibrosis and destroys intrahepatic bile ducts as well. However, since the obliterative process can resolve, even if not usually completely, surgical procedures of conventional or of hepatic-portoenterostomy type should be considered for all infants who are found to have biliary atresia. Probably biliary atresia is more in need of preventive or prophylactic measures than of new surgical procedures.

Adolescent↗
PubMedDate not supplied

[Value of rectal sensitivity test in chronic childhood constipation].

The rectal sensitivity test evaluates the distension volume for which the initial transient sensation occurs on defecation (conscious rectal sensitivity threshold). The conscious rectal sensitivity threshold (S.S.R.C.) was performed on 10 normal controlled subjects and 103 children with chronic constipation, functional megarectum and normal rectoanal inhibitory reflex. Children were between 5 and 14 years old. S.S.R.C. was increased in children with chronic constipation. Encopresis was proportionally increased with relation to S.S.R.C. increase. A therapeutical protocol was applied in all patients. Fifteen patients are still being treated: 87 obtained a normal function within 8 to 23 months of treatment; in one case the treatment was unsuccessful. The period of treatment was proportional to S.S.R.C. increase. Physiopathological background of a correct management is discussed.

Adolescent↗
PubMedDate not supplied

[The ureterocele in childhood. Type of treatment and results].

Ureterocele is an infrequent urinary malformation in pediatric age, but it is frequently clinically severe. Ureterocele in a duplex pyelo-ureteral system often presents very difficult treatment problems not uniformly dealt with. Authors report their experience with 79 ureteroceles observed in 72 children. 27 children were less than one year old. In the authors experience simple ureterocele with a single collecting system doesn't give any surgical problem. On the contrary ectopic ureterocele, almost always associated with a pyeloureteral duplication, frequently gives some problems of surgical treatment. Treatment is always individualized but in our experience the best results have been achieved with unroofing of the ureterocele and upper heminephroureterectomy in one stage, eventually associated with lower ureteral reimplantation. This treatment can be used successfully in the majority of ectopic ureteroceles in pediatric age.

Adolescent↗