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Biomedical subjects

T I Derevianko

Publications and source records attributed to T I Derevianko.

At least 19 recordsLinked to original sources
PubMed1989

[Ectopic ureterocele].

An analysis of 43 clinical observations helped to establish three variants of ectopic ureterocele: ectopic ureterocele of the accessory ureter, ectopic ureterocele of the doubled ureter. Ectopic ureterocele always brings about obstruction of the ureter. Ectopic ureterocele of the accessory ureter was treated by making anastomosis between the accessory ureter and the main ureter with a removal of all the accessory ureter and dissection of ureterocele. The operation of heminephrureterectomy or dissection of ureterocele with resection of the paracystic part of the ureter were performed with antireflux utererocystoanastomosis.

Adult↗
PubMed1987

[Anomalies of ureteral orifices simulating diseases of the abdominal organs].

The ectopy of the ureter orifices and ureterocele are always followed by either mechanical or dynamic obstruction of the ureter and obstructive pyelonephritis. These anomalies are periodically accompanied by abdominal pains which make their appearance during an attack of acute pyelonephritis. These abdominal pains can be erroneously taken for symptoms of appendicitis or intestinal obstruction and the patients are subjected to appendectomy or laparotomy by mistake. The erroneous appendectomy or laparotomy were fulfilled in 47 of 201 patients with ectopy of ureter orifices and ectopic ureterocele which were observed by the authors. The differentiation of genesis of abdominal pains may be more exact with the help of chromocystoscopy, excretory urography and isotopic renography.

Abdomen, Acute↗
PubMedDate not supplied

[A rare variant of testicular teratoma].

Tumors arising in human embryo from embryonic laying of an organ can be considered anomalies. Such tumors are renal adenomyosarcoma (Wilms' tumor), mesenchymoma and sarcoma botryoides of the prostatic gland, embryonal cancer of the testis, leydigocellular tumors of the testis and teratomas. Such anomaly as testicular teratoma occurs not rarely. However, testicular teratoma containing brain tissue is a rare finding. A case of teratoma of the left testis is reported in an 11-month-old infant. The tumor contained skin, appendages of the skin, cartilage, bone tissue, brain tissue, hair, fat.

Humans↗
PubMedDate not supplied

[Variants of hermaphroditism (clinical findings)].

False and true hermaphroditism (FH and TH) are often encountered in surgery for hypospadia. A clinically validated classification of various types and variants of hermaphroditism is proposed. FH is divided into male FH and female FH. TH also falls into two categories: TH without anomalies of external genitalia and that with these anomalies. The latter category has three variants: 1) all genitalia of males or females and some genitalia of the other sex; 2) some female and male organs in various combinations; 3) all organs of both sexes. All TH variants are illustrated by 5 case reports. These patients were thoroughly examined and their sex was surgically corrected.

Adolescent↗
PubMedDate not supplied

[A case of urethral transposition and vaginoplasty in the presence of urogenital sinus in women].

A case of female false hermaphroditism is reported in a 30-year-old woman with urogenital sinus. This woman has undergone vaginoplasty and urethral transposition. The latter is not usually made in women with urogenital sinus. This leads to the position of the external urethral ostium in the depth of the newly formed vagina and, finally, to ectopia of the external urethral ostium or hypospadia. The result is that such woman suffers all life from urethritis, cystitis and vulvovaginitis.

Adult↗
PubMedDate not supplied

[Acute ureteral obstruction (renal colic)].

Acute ureteral obstruction is always associated with high intrapelvic hydrostatic pressure. Objective diagnosis of renal colic can be made by direct measurement of intrapelvic pressure (IPP). We propose a very simple device for estimation of IPP consisting of ureteral catheter and polyethylene tube 150 cm long. The device gives intrapelvic pressure in centimeters of urinary column. The figures obtained corresponded to those in measurement of IPP in cm of water column. In normal 187 examinees IPP ranged from 0.5 to 14.2 cm urinary column. Mean normal IPP in females was higher than in males. In 187 patients with renal colic IPP varied from 55 to 150 cm of urinary column. Mean IPP at the height of renal colic was in females and males 97.4 +/- 3.0 and 89.8 +/- 2.5 cm of urinary column, respectively. Thus, IPP in health and renal colic is higher in females than in males. In bilateral renal colic and colic in solitary kidney catheterization of the ureter is mandatory because of anuria. Ureteral catheterization is also indicated in cases of renal colic combination with attack of acute pyelonephritis. If ureteral catheterization is indicated, IPP pressure should be measured. This is important for diagnosis of both acute ureteral obstruction and pathogenesis of anuria.

Acute Disease↗
PubMedDate not supplied

[Surgical correction of hermaphroditism].

By their documents people worldwide are of male or female gender. But in fact, four genders exist: male, female, hermaphroditism and eunuchoidism. Neonatologists must know how to diagnose minimum three sexual anomalies: true hermaphroditism, false male hermaphroditism and false female hermaphroditism. Such knowledge leads to surgical correction of hermaphroditism early in childhood. Six criteria of sex diagnosis is described: chromosomal (genetic) sex; gonadal (true) sex; hormonal sex; phenotypical (somatic) sex; psychological sex; legal sex. Variants of false male, false female and true hermaphroditism, principles of surgical correction of hermaphroditism are outlined. 3 true hermaphrodits are described. A 22-year-old and 13-year-old true hermaphrodits were operated to be a male and female, respectively. Sex correction is based on the patient's and his parents' will. This will, as a rule, coincides with a legal sex documented in the maternity home and sexual psychoorientation obtained from the associates.

Adolescent↗
PubMedDate not supplied

[Combinations of different types and variants of ectopia of the ureteral ostia].

Ectopias of the ostia ureteris are generally accepted to be divided into intra- and extravesical ones. It is expedient to divide this abnormality into lower (that of the ureteral ostium below and more medial than the normal site) and upper (that of above and more lateral than the normal site) ectopias of the ostia ureteris. The lower ectopia may be intra- and extravesical. The upper ectopia may be also intra- and extravesical. In ureteral ostial ectopia, the passage of urine from the kidney into the urinary bladder is impaired due to either mechanical ureteral obstruction or vesicoureteral reflux. The lower intravesical ectopia of the ostium ureteris is frequently associated with ureterocele. The study was undertaken to examine 242 patients with ectopia of the ostia ureteris, including those with extravesical (5.3%), intravesical (93.8%) and associated (0.9%) ectopias. Lower ectopia of the ostia ureteris was observed in 28.5%, upper, in 64.5%, and associated ones in 7%. The authors outline 14 different combinations of various types and variants of ureteral ostial ectopias which were observed in 25 patients. The diagnosis of such complicated abnormalities may be made only on the basis of knowledge of all the variants of lower and upper ectopias of the ostia ureteris. All these abnormalities require surgical correction.

Adolescent↗
PubMedDate not supplied

[Interpelvic, ureteropelvic and interureteral anastomoses in duplication of the kidney and the ureter].

The surgery is made to save both halves of the double kidney in mechanic obstruction or vesicoureteral reflux in the accessory or basic ureter. The affected ureter is always removed under anastomosis. The interventions are indicated in anomalies causing ureteral obstruction, ureterohydronephrosis, vesicoureteral reflux, pyelonephritis. They are frequently performed in ectopic ureterocele of the accessory ureter, in vesicoureteral reflux associated with intravesical high ectopy of the basic ureter ostium and normal ostium of the accessory ureter, in low intra- and extravesical ectopy of the accessory ureter ostium. The authors have conducted 21 operations in 20 patients: bilateral transureteroureteral, 2 intrapelvic, 1 ureteropelvic and 18 transureteroureteral anastomoses. The surgery was decided upon because of ectopic ureterocele of the accessory ureter, ectopic ureterocele of the accessory ureter with vesicoureteral reflux via ureterocele, high ectopy of the basic and low ectopy of the accessory ureter ostia with reflux, low ectopy of the accessory ureters ostia. Short- and long-term outcomes of all the operations were good.

Anastomosis, Surgical↗
PubMedDate not supplied

[Anomalies of the genitalia and in sex differentiation].

Out of four biological sexes (male, female, bisexuality, asexuality) world legislation acknowledges only two. Therefore, hermaphrodites and eunuchs have either male or female documents. To determine human sexual anomaly, it is necessary to define genetic (chromosomal), gonadal (hormonal), phenotypic, psychological and legal sexes. True hermaphroditism must be distinguished from a false one: true hermaphrodites have both female and male gonads (or gonadal tissue), false hermaphrodites are unisexual, but their sex organs resemble those of the opposite sex. Five degrees of masculinization of the external genitalia in false female hermaphrodites are specified. In masculinization degree IV female sex organs look like genitalia of males suffering from perineoscrotal hypospadias with unaffected urogenital sinus and cryptorchidism. Feminization of male external genitalia comprises three anomalies: perineoscrotal hypospadias, unaffected urogenital sinus and cryptorchidism. Three cases are described: a girl with masculinization of the external sex organs of the 5th degree, a 7-year-old child with true hermaphroditism and gonadal tumor, a true hermaphrodite aged 22 surgically treated to correct the sex to be a male.

Adult↗
PubMedDate not supplied

[Bilateral pyeloureteral anastomosis in cervico-sphincteric ectopy of the ostia of both supernumerary ureters].

The paper reports a case of bilateral hydronephrosis diagnosed by ultrasound intrauterinely in a girl of 11 months of age. At the age of 5 months the child had attacks of pyelonephritis. Clinical examination has established: double kidney and ureters, cervico-sphincteric ectopy of the ostia in both accessory ureters, hydroureter of both accessory ureters, hydronephrosis of the upper kidneys. The patient underwent two-stage operation.

Anastomosis, Surgical↗
PubMedDate not supplied

[Ureterocele in children].

Types and variants of ureterocele are specified basing on 115 clinical cases and literature data. Three types of this anomaly exist: intravesical, cervicosphincteral and extravesical. Intravesical ureterocele can be orthopedic and ectopic. The latter has three variants: of accessory ureter, of partially double ureter, of non-double ureter. Ureterocele is frequently associated with low ectopy of ostium ureteric, double ureter. Ureterocele occurs neither in the ureter itself nor in high ectopy of the ostium ureteric. Extravesical ureterocele has many variants which differ in males and females. All ureterocele types and variants occur as unilateral or bilateral. The new diagnostic method is proposed: endovesical ureterocelegraphy.

Child↗
PubMedDate not supplied

[Segmentary dysplasia of the perivesical portion of the ureter].

Four variants of segmentary dysplasia in paravesical ureter are described: segmentary aplasia, segmentary atresia, segmentary hypoplasia, fibrous block. Segmentary dysplasia manifests in the absence of muscular layer in the wall of paravesicular ureter. In fibrous block the layer is replaced by embryonal collagen fibers. These anomalies cause ureteral obstruction and ureterohydronephrosis. 72 operative interventions were performed. Reoperations were made in such complications as vesicoureteral reflux, stenosis of ureterocystoanastomosis. It is necessary to differentiate between ectopy of the ureteral ostium, ureterocele and ureteral dysplasia in the form of segmentary hypoplasia and/or fibrous block causing the obstruction in the paravesicular ureter.

Adolescent↗