An unexpected diagnosis in children with male phenotype and bilateral nonpalpable gonad: congenital adrenal hyperplasia with female genotype.

PURPOSE: Female pseudohermaphroditism is the most frequent form of ambiguous genitalia in children with congenital adrenal hyperplasia (CAH). However, a small group of children with complete urethral development in contrast to 46XX karyotype can be encountered. We aimed to define the characteristics of patients with 46XX CAH but having fully developed male external genitalia. METHODS: The records of 11 children with CAH and 46XX karyotype but having male phenotype, encountered from 1990 to 2012 were reviewed retrospectively. The age, presenting signs and symptoms, diagnostic studies, surgical procedures, early results and outcome were noted. All patients were evaluated by gender assignment team and the decision of the family was also taken into consideration during gender assignment. RESULTS: Eleven children (mean age 3.64 ± 3 years) (range 5 days-10 years) were enrolled. The main presenting signs were nonpalpable gonads (n = 7), hyperpigmentation (n = 2), jaundice (n = 1) and electrolyte imbalance (n = 1). All patients had bilateral nonpalpable gonads and male phenotype with mean phallus length of 4.5 ± 1.7 cm. Urethral meatus is located at normal position (n = 6) or hypospadiac (n = 5). Labioscrotal fusion was complete in all cases and they were classified as 4th (n = 3) or 5th (n = 8) degree of virilization according to Prader's classification. All children had CAH and 46XX genotype. Pelvic ultrasound (n = 8) and genitocystogram (n = 9) were used, and genitocystoscopy was performed (n = 6). Male gender was assigned in most (n = 10) and female gender in one. Corrective surgery could be performed in 10 patients. The surgical procedures were hysterectomy + bilateral salphingo-oophorectomy + vaginectomy (n = 9), chordee release (n = 3) and then second-stage (n = 2) or one-stage urethra repair (n = 1), and pure one-stage urethra repair (n = 1). One case underwent surrenalectomy before the diagnosis of CAH. Mastectomy (n = 1) and fistula repair (n = 3) were additional operations. Only one child could be undergone feminizing genitoplasty and another was lost to follow-up. CONCLUSION: Unfortunately, most of the children underwent surgery in adverse to genotype because of constituted sexual identity. Children with male phenotype and bilateral nonpalpable gonads should undergo promptly biochemical analyses for CAH and early chromosomal analysis.

A unique case of magnet ingestion with respect to presentation and management.

Magnet ingestion may lead to serious complications with delay in diagnosis and treatment. The forceful attraction between magnets, with gastric and/or intestinal wall entrapped between them, can cause injury through pressure necrosis. The radiological appearance of more than one magnet on X-ray can be easily misinterpreted as belonging to only one rod-like radiopaque foreign body, even if the magnets are located in different parts of the gastrointestinal tract, thus delaying the management up to the onset of emergent surgical complications. A 17-month-old female with ingestion of a pair of magnets is presented, together with introduction of the clinical picture and therapeutic approach, which differed from the other previously reported cases. The ovoid shape of the magnets, their localization in the gastrointestinal tract (leading to entrapped gastric and intestinal wall between them), absence of any complication, and the therapeutic approach of endoscopic retrieval are the main distinguishing features of this case from those previously reported.

Why gastric perforation occurs in patients with isolated esophageal atresia: more vulnerable stomach?

Gastric perforation (GP) in patients with isolated esophageal atresia (EA) is seen more than expected. The etiology of the perforation may be vulnerability of these immature stomachs. Gastrostomy operation should be performed by gentle handling. The volume of gastrostomy feedings should be increased incrementally. The early diagnosis of perforation is only possible with a high index of suspicion. The stomach should be visualized by gastrography with soluble contrast material as soon as the perforation is suspected.

The prognostic factors in children undergoing pulmonary metastatectomy.

A retrospective analysis was performed to determine the prognostic factors affecting survival in children who underwent pulmonary metastatectomy. Seventeen patients who underwent pulmonary metastatectomy between 2000-2006 were evaluated retrospectively by means of age, sex, primary diagnosis, time of metastasis appearance, number of nodules found on imaging examinations, type of management, surgical data, and outcome. Video-assisted thoracoscopic surgery (VATS) was used in 11 patients, and all patients underwent thoracotomy consequently. The nodule was composed of tumor cells in 13 (76%) patients and had positive surgical margins in 5 (38%). The time of metastasis appearance, number of metastases and completeness of the nodule excision did not affect survival (p=0.31, p=0.87 and p=0.56, respectively). Nodule size >1 cm was associated with dismal survival (p=0.008). Time elapsed until the diagnosis of pulmonary metastasis, number of metastases and the completeness of metastatectomy do not have an impact on survival. The only significant prognostic factor is the size of the largest metastatic nodule. The presence of a metastatic nodule >1 cm is associated with a worse outcome in pediatric patients. VATS is an adjunct method to thoracotomy in the surgical management of pulmonary metastasis in children.

Postoperative intussusception in children: a keen diagnosis in postoperative ileus.

We investigated the patients who developed postoperative intussusception after a variety of intraabdominal procedures in order to identify the differentiating features and facilitate the prompt recognition and management of this entity. Fourteen patients with postoperative intussusception following an abdominal surgery between 1993 and 2010 were analyzed retrospectively. The primarily applied surgeries were: repair of diaphragmatic hernia (n=3), choledochal cyst excision (n=2), extraction of surrenal neuroblastoma (n=2), Duhamel operation (n=1), colostomy closure (n=1), Nissen fundoplication with (n=1) and without (n=1) gastrostomy, gastropexy (n=1), gastrostomy and jejunostomy (n=1), and manual reduction of ileocolic intussusception (n=1), with a median duration of 135 minutes (120-240). Patients were reoperated on the 3rd day (2-16); intussusception was ileoileal in 11, and was manually reduced in 12 of all patients. Postoperative intussusception differs from other cases of invagination with respect to the pathogenesis, clinical presentation and therapeutic approach. The original operations are mostly the major and lengthy ones, with vicinity to the diaphragm. Awareness of this entity by surgeons and differentiation from other causes of postoperative ileus are obligatory for prompt recognition and management.

Papillary thyroid carcinoma does not have standard course in children.

BACKGROUND AND PURPOSE: Papillary thyroid carcinoma has a favorable outcome in children. Recent experience with young children cases with early recurrences, after the total thyroidectomy and excision of palpable lymph nodes, in contrast to usual course of disease in adolescent cases, prompted us to review our experience on papillary carcinoma surgery. MATERIALS AND METHODS: Sixteen children who underwent surgery for papillary carcinoma between 1997 and 2010 were included. The charts and surgery notes were evaluated retrospectively and age, sex, complaints and physical findings at presentation, past medical history, results of laboratory tests, imaging findings, aspiration biopsy, extent of disease, details of surgery, complications and postoperative course were noted. RESULTS: Male to female ratio was 3:1. The mean age was 10.9 years (range, 5-16). The presenting symptom was palpable swelling in the neck (n = 12) or asymptomatic nodule was detected incidentally (n = 4). Physical examination findings were palpable nodule (n = 7), lymphadenopathy (n = 6) or both (n = 4). Thyroid ultrasound (US) revealed nodule (n = 9), heterogenisity of the parenchyma and enlargement of thyroid (n = 9), and microcalcifications (n = 5). Fine-needle aspiration biopsy was performed in 12 patients and was suggestive for malignancy in most cases (91%). Pulmonary metastasis was detected at presentation in two patients and appeared after thyroidectomy in one patient. Complementary thyroidectomy was performed in nine patients because the total thyroidectomy with or without cervical lymph node dissection was the treatment of choice (n = 15). Iodine scan was performed 4 weeks later following thyroidectomy. Radioactive iodine ablation (RIA) therapy was given to 11 patients who had residual or recurrent disease. Postoperative complications were permanent hypoparathyroidism (n = 4), recurrent laryngeal nerve injury (n = 3), lymphorea (n = 1) and Horner's syndrome (n = 1). CONCLUSION: Total thyroidectomy and excision of affected lymph nodes is the current mode of surgical management for thyroid papillary carcinoma in children. However, especially in young children (<10 years), modified lymph node dissection should be added to total thyroidectomy in order to avoid leaving the residual tumor foci which can impair the efficacy of the ablation therapy.

A rare type of renal cell carcinoma in a girl: hybrid renal cell carcinoma.

Hybrid renal cell carcinoma (HRCN) is a rare type of renal tumor with characteristic pathologic features, including oncocytic and chromophobe cellular content, and shows more favorable prognosis than renal cell carcinoma. The early-stage tumors show favorable outcome, and postoperative regular clinical and radiological follow-up is adequate in most cases. However, close follow-up is mandatory for tumors with histopathologically coexistence of squamous, papillary, and/or eosinophilic RCC component. This report describes a 12-year-old girl with a stage I HRCN who was closely followed after nephrectomy with no further treatment.

Neuroblastoma in Turkish children: experience of a single center.

OBJECTIVE AND METHOD: The survival of the patients with neuroblastoma has improved in last few decades. But still it depends on various clinical and biological factors. To assess the clinical features and trends in survival, the data for 500 newly diagnosed patients between January 1972 and December 2004 from a single center were retrospectively analyzed. RESULTS: Histopathologic subtypes were neuroblastoma (NBL) in 462 patients (92.4%) and ganglioneuroblastoma in 38 patients (7.6%). The median age was 2.9 years and Male/Female ratio was 1.3/1. Primary tumor sites were abdomen, thorax, pelvis, neck, and others with the frequency of 72.2%, 14.9%, 3.8%, 3.2%, and 5.9%, respectively. There were 30, 49, 133, 257, 31 patients with stage 1, 2, 3, 4, 4S disease and their 10-year survival rates were 100%, 75.8%, 34.1%, 6.5%, and 59.4%, respectively. The outcome has significantly improved according to 10-year periods. The 5-year overall survival rates were 14%, 26.1%, 39.2%, and 52.4% for the years of 1970s, 1980s, 1990s, and after 2000. Surgical procedure involving total or near total tumor removal improved the survival (P=0.002). Both 5-year overall survival and event free survival rates were higher when partial resection was performed, especially in stage 3 disease (P=0.002 and P=0.02). In multivariate analysis, age above 18 months at diagnosis (P=0.01), stage 4 disease (P<0.001), abdominal primary tumor site (P<0.001), NBL subtype in histopathology (P=0.001), responsiveness to chemotherapy (P<0.001) positive or high Vanillyl mandelic acid levels (P=0.02) and male sex (P=0.008) were the determinants of poor prognosis. CONCLUSIONS: The survival rates in children with local disease are comparable with the results of developed countries; however, the results in children with advanced disease are still not satisfactory. To improve the outcome, especially in children with advanced disease, more effective chemotherapy regimens and molecular therapies should be investigated. Sharing the knowledge and capacity building to improve the treatment results in NBL are also critical for developing countries.

Gastric organo-axial malrotation coexisting respiratory symptoms.

Gastric malrotation is defined as a torsion of stomach around its short or long axis. It is a rare disease in childhood. Gastric malrotation may present either as a surgical emergency or as chronic abdominal symptoms. There is limited data about the respiratory symptoms associated with gastric malrotation. The aim of this study was to review the records of 14 children who presented with respiratory symptoms and diagnosed as gastric organo-axial malrotation. Between August 2005 and August 2007, 14 children diagnosed as having gastric organo-axial malrotation participated in this study. There were 11 boys and three girls with a mean age of 7.1 months. All patients were symptomatic. Presenting symptoms included wheezing in four patients, recurrent pneumonia in four, chronic cough in two, chronic cough and apnea in two, recurrent pneumonia and chronic cough in one, and chronic cough and failure to thrive in one. All of our patients had organo-axial gastric malrotation. Gastroesophageal reflux was found in nine patients (64.2%). Six patients were treated with surgery and antireflux medication and the remaining eight patients with antireflux medication. In conclusion, it is probable that gastric malrotation associated with massive or occult gastroesophageal reflux could be responsible for the respiratory symptoms such as chronic cough, recurrent pneumonia, wheezing, and apnea.

Minimally conjoined omphalopagi: emphasis on embryogenesis and possibility of emergency separation.

Minimally conjoined omphalopagus twins (MCOTs) has been recognized in the last decade as a special subgroup in which omphalopagus twins have union of peritoneal cavities through anterior lower abdominal wall defect with union of distal small intestine and patent urachal structures and associating anorectal malformation. A careful review of the current literature revealed that MCOTs have usually been separated in emergency situations within the first hours of life due to ruptured omphalocele, gastroschisis, stillbirth of one of the twins, intestinal obstruction, or requirement of enterostomy for cloacal anomaly. Pediatric surgeons should be familiar with MCOTs and ready for emergency separation with thorough knowledge of the anatomical relationships of the connecting structures and the embryologic basis for this anomaly. We present a new set of MCOTs separated in emergency conditions with a review of the relevant English literature. We give special emphasis to the common surgical characteristics and a brief discussion on the embryogenesis of this rare condition.

A 13-year-old female with Turner syndrome and achalasia.

The most common gastrointestinal problems associated with Turner syndrome are intestinal telangiectasia, colon carcinomas, inflammatory bowel, and liver diseases. In this paper we present for the first time a 13-year-old female with 45,X karyotype associated with achalasia. As far as we know, achalasia associated with Turner syndrome has not been reported previously. The aim of this report was to point out the association of Turner syndrome and achalasia. It could be a coincidental or Turner syndrome-associated finding.

Eccentric circummeatal based flap with limited urethral mobilization: An easy technique for distal hypospadias repair.

BACKGROUND: Hypospadias is a common congenital anomaly. Over 300 techniques have been described for repairing hypospadias. OBJECTIVE: Eccentric circummeatal based flap with combined limited urethral mobilization technique (ECMB-LUM) is a simple procedure to repair distal hypospadias with minimal complication rate. This study presents results of this technique, highlighting surgical pitfalls to achieve the best result. STUDY DESIGN: Medical records of patients with distal hypospadias operated on using the same technique between 1998 and 2011 were reviewed retrospectively. Age at surgery, position of meatus preoperatively and postoperatively, duration of urethral catheterization and hospitalization, early and late complications, previous hypospadias repairs, and secondary surgical interventions were evaluated. In the surgical technique an eccentric circummeatal based flap is outlined. The proximal part of the flap is dissected from the underlying urethra and Buck's fascia. If the flap is not long enough, the distal urethra is mobilized a few millimeters (Figure). The eccentric flap is sutured to the tip of the glans. The glans wings are approximated in the midline. A urethral catheter of 6 Fr or 8 Fr is passed and left in the bulbous urethra or the urinary bladder. Diverged limbs of corpus spongiosum are approximated on the urethra, then, the glans and skin of the penile shaft are sutured. RESULTS: Of the 171 consecutive patients operated on using the ECMB-LUM technique; 115 had coronal, 47 had subcoronal, and nine had glanular meatus. The mean age at surgery was 4.5 (1-17) years. Patients were hospitalized for 2.2 ± 0.7 days. Mean duration of urethral catheterization was 2.3 ± 0.5 days. All but eight patients had ECBF-LUM as primary repair. There were no early complications such as bleeding, hematoma, and wound infection. All patients voided spontaneously after catheter removal. Late complications were meatal stenosis, urethrocutaneous fistula, meatal regression, and glandular dehiscence (Table). These patients were treated using dilatation, fistula repair, meatoplasty, and secondary repair with the same technique, respectively. Eventually all patients had a vertical slit-like meatus on the tip of a natural looking glans. DISCUSSION: The most commonly used distal hypospadias repair techniques are glanular approximation, meatal advancement and glanuloplasty, Koff, Mathieu, Thiersch-Duplay procedure, tubularized incised plate repairs, and modifications of these techniques. Cosmetic and functional results and complication rates of ECMB-LUM technique are comparable with those of the commonly used techniques.

Evaluation of the removal reasons of totally implantable venous devices in children: a retrospective study.

Totally implantable venous access devices (TIVADs) increase the quality of life in children with hematologic and oncologic diseases or organ failures. The aim of this study is to determine the reasons for port removal. The port catheters, implanted and removed in patients between January 2000 and June 2013 were evaluated retrospectively. The patients were divided into two groups, whose port catheters were removed due to completed therapy (completed therapy group, CTG) and whose port catheters were removed because of a port catheter-related complications (complication group, CG). In the CG, the patients whose port catheters are removed for infectious reasons are investigated for whether there is a relationship with age, gender, body mass index (BMI), height and weight at the time of port implantation and removal. In total, 242 patients who underwent port implantation and removal were included in the study. The male to female ratio was 1.32/1 and the mean age of the patients was 9.4±4.9 years (0-24 year). Patients were enrolled in CTG (n=170, 70.2%), and CG (n=72, 29%). There is a positive correlation between BMI and infections (p < 0.05). In the CG, patients under steroid treatment had higher incidence of non-infectious causes than infectious causes (p < 0.05). Oppositely, non infectious complications were higher in steroid free patients (p < 0.05). There was no catheter related mortality in the entire study group. The hematological malignancies and solid tumors are the most common underlying primary disease in patients with port removal because of complications. Infectious complications are most common cause of port removal in children and despite other microorganism, fungi should be considered as a cause of catheter related infections.

Factors affecting survival in neonatal surgery unit in a tertiary care university hospital during 26 years.

This clinical study was designed to evaluate mortality rate and the factors that may affect survival in neonatal surgery unit. Randomly chosen 300 (ß: 0.20) patients among 1,439 patients treated in neonatal surgery unit during years 1983 to 2009, were evaluated retrospectively. The patients were separated into three groups according to date of treatment; Group A: 1983 - 1995, Group B: 1996 - 2005 and Group C: 2005 - 2009. M/F ratios did not differ between non-survived and survived patient populations. Mortality rates were 37%, 22% and 13% in Group A, B, and C respectively (p < 0.001). Parenteral nutrition, maternal age, time until admission and gestational age did not affect mortality rate, however median age of newborn was lower in non-survived cases (1 day vs. 3 days, p < 0.001). Associating abnormality, low birth weight ( < 1,500 g), associating sepsis, need of globulin and requirement of respiratory support were determinants of lower survival (p < 0.001). The mortality rate for patients that underwent thoracotomy (42%) and laparotomy (41%) were higher than patients that underwent other operations (8%) and observation (10%) (p < 0.001). Diaphragmatic hernia had higher mortality rates than the other pathologies (p < 0.001). Survival rate is increasing to date in newborn pediatric surgery unit; it is independent from parenteral nutrition, maternal age, time to admission and gestational age however it is affected adversely by the age of patient, associating abnormality, low birth weight, presence of sepsis and requirement of respiratory support. Increase in survival could be related to various additional factors such as development of delicate respiratory support machines, broad spectrum antibiotics, hospital infection control teams, central venous catheters, use of TPN by central route, volume adjustable infusion pumps, monitoring devices, neonatal surgical techniques, prenatal diagnosis of pediatric surgical conditions and developments of environmental control methods in neonatal surgical units.

The efficacy of delayed surgery in children with high-risk neuroblastoma.

CONTEXT: Surgery is an important part of treatment in children with neuroblastoma; however, exact timing is unclear. Both initial and delayed surgery was suggested as the best by numerous studies. AIMS: Thus, we aimed to investigate the role of delayed surgery on 31 children with high-risk neuroblastoma. MATERIALS AND METHODS: Thirty-one children with high-risk neuroblastoma were enrolled into the study. STATISTICAL ANALYSIS USED: Statistical analysis was performed using Statistical Package for the Social Sciences (SPSS) for windows 10.0. RESULTS: There 'were 15 male and 16 female patients with a median age of 3.0 ± 3.2 years. Primary tumor site was adrenal in 27, non-adrenal in two, pelvic in one, and mediastinal in one patient. MYCN gene was amplified in four and non-amplified in 11 children on totally 15 children with available data. Lactate dehydrogenase was elevated in 30 children. The tumor volumes at diagnosis and before surgery in the whole group were 154.3 and 12.5 mL, respectively. The decline in tumor volume was statistically significant (P < 0.0001). Initial surgery was performed in three and delayed in 20 children, and eight children were inoperable. Surgical complication rate was 66.6% (two out of three patients) in initial surgery group; however, the rate was 15% (3 out of 20 patients) in delayed surgery group. The 5-year event-free survival and overall survival rates in the whole group were 44.8% and 50.8%, respectively. Primary tumor area control rate was 95% CONCLUSIONS: In conclusion, the delayed surgery with intensive chemotherapy and radiotherapy has been successful for primary control in high-risk neuroblastoma patients.

Solid tumors in the neonatal period.

From 1972 to 2000, 123 patients with solid tumors whose complaints had started in the first 28 days of life were retrospectively evaluated. Fifty-five patients were diagnosed in the first 28 days and 68 patients were diagnosed after 28 days. In the former group, 85.5% of patients had symptoms in the first day of life. In the latter group, 77.9% had the onset of symptoms in the first day. Tumor subgroups in the neonatal period included teratoma (34), neuroblastoma (11), rhabdomyosarcoma (3), Wilms tumor (1), and retinoblastoma (3), and the others (3). Three patients had other, less common tumors. In the second group the numbers were the following: for teratoma (32), neuroblastoma (15), germ cell tumors other than teratomas (8), rhabdomyosarcomas (4), the other soft tissue sarcomas (3), Wilms tumor (1), retinoblastoma (1), and other, rare tumors (4). There were 22 malignant tumors in the first group, and 44 in the second group. Fourteen patients in the first group died in the early postoperative period or with progressive disease. Nineteen of 44 patients died in the second group. Overall survival rates were 24.9% and 51.6% in first and second groups, respectively (p = 0.015). Event-free survival rates were 14.7% and 47.7% in these groups, respectively (p = 0.0063). This is the first report comparing clinical features and prognosis of tumors diagnosed in the first 28 days of the life with those diagnosed after 28 days. The prognosis was worse in infants diagnosed in the first 28 days of life.

Biochemical indicators of caustic ingestion and/or accompanying esophageal injury in children.

A prospective clinical study was conducted to evaluate whether or not any biochemical predictor of caustic ingestion and complicating esophageal injury exists. Children who were admitted to the hospital within 24 hours following caustic substance ingestion between 1994 and 2000 inclusive were evaluated. The ingested substance and complaints upon admission were noted. Groups were constructed according to the ingested substances such as household bleach (HB) (Group 1), acid (Group 2) or alkali ingestion (Group 3). Full biochemical analyses, chest X-ray and blood gas estimations were obtained and children were evaluated endoscopically. Seventy-eight children were studied. There were 19, 20 and 39 children in Groups 1, 2, and 3, respectively. There were no sex or age differences among groups (p>0.05). Esophagogastric injury was not encountered in Group 1. Second degree injury was present in 12 and 11 children in Group 2 and Group 3, respectively. Blood pH level was decreased in Group 1 (p=0.013), but not different in Groups 2 and 3 (p>0.05). pH did not differ in patients with or without esophageal injury (p>0.05). While serum uric acid values were significantly increased in children with esophageal burn (p=0.001), serum phosphorus and alkaline phosphatase levels were significantly decreased in children with esophageal injury (p=0.01 and p=0.019, respectively). Blood bicarbonate and serum potassium, chloride, urea nitrogen, creatinine, glutamic-oxaloacetic transaminase, glutamic-pyruvic transaminase, lactic dehydrogenase, calcium, glucose, protein, albumin and bilirubin levels did not differ between group (p>0.05), nor between patients with or without complicating esophageal injury (p>0.05). Low serum pH level is an indicator of HB ingestion. Routine endoscopy may not be necessary in children with normal blood pH values after ingestion. Although normal values of pH, uric acid, phosphorus and alkaline phosphatase levels do not rule out ingestion of an acid-or alkali-containing substance other than HB, increase in uric acid and decreases in phosphorus and alkaline phosphatase levels point to the presence of an esophageal injury.

A retrospective study of choledochal cyst: clinical presentation, diagnosis and treatment.

The treatment and early diagnosis of choledochal cyst are very important to prevent complications of the disease. Delay in treatment can cause lethal complications like biliary cirrhosis and increased morbidity in patients. We studied 26 children with choledochal cyst retrospectively for their clinical presentation, and for the diagnostic tools and treatment modalities, used. The most common findings of choledochal cyst in our series were abdominal pain, vomiting, and ictures in contrast to the classical triad of the disease of jaundice, mass and pain. The most useful diagnostic tool was abdominal ultrasonography. For the treatment, we preferred Roux-en-Y hepaticojejunostomy to the internal drainage procedures, and the results were excellent with minimal mortality and morbidity. We underline prompt diagnosis and treatment to prevent late complications of the disease.

Enterobius granuloma: an unusual cause of omental mass in an 11-year-old girl.

Enterobius vermicularis (pinworm) is the only nematode that infects humans. It is one of the most common intestinal parasites. Pinworm commonly infests the terminal ileum and colon, and does not cause severe morbidity unless ectopic infection occurs. However, granulomatous lesions caused by ectopic Enterobius vermicularis infection may lead to unusual clinical symptoms and may be misinterpreted as malignant lesions. Herein, the authors present an 11-year-old girl with pinworm infection who presented with abdominal pain and an omental mass, with special emphasis on the diagnosis and treatment.

Composition of parenteral nutrition solution affects the time of occurrence but not the incidence of cholestasis in surgical infants.

Parenteral nutrition-associated cholestasis (PNAC) is one of the most important complications of parenteral nutrition (PN). This study was conducted to define the incidence, characteristics and precipitating factors of PNAC in infants treated with two different PN regimens in the pediatric surgery department. The records of infants who received two different PN regimens during January 2000-May 2008 (Group 1) and June 2008-May 2012 (Group 2) were reviewed retrospectively. Patients with and without PNAC comprised the study (Groups 1a-2a) and control groups (Groups 1b-2b), respectively. With Group 1 (n=109) and Group 2 (n=46) constituted as indicated, Group 1a (n=13), Group 1b (n=32), Group 2a (n=6) and Group 2b (n=8) were evaluated. The incidence of PNAC was 14.1% (n=22), and the type of PN regimen did not affect the incidence (14.6% vs. 13.0%, p=0.39). The duration of PN was longer in Group 1a than in Group 1b (34 ± 3 7 vs. 13 ± 10 days, p=0.01), and longer in Group 2a than in Group 1a or Group 2b (146 ± 148 vs. 34 ± 37 days, p=0.02, and 14.0 ± 5.9 days, p=0.002). PNAC developed later in Group 2a than in Group 1a (42.0 ± 24.6 vs. 9.0 ± 8.3 day, p=0.02). The lipid dosage was higher in Group 1a than in Group 1b (3.5 ± 0.7 vs. 3.45 ± 0.54 g/ kg/day, p=0.001) or Group 2a (2.2 ± 0.4 g/kg/day, p=0.01). The lipid dosage was also higher in Group 2a than in Group 2b (p=0.001). Two different regimens resulted in similar PNAC rates. The composition of nutrients in PN solution affects the time of occurrence but not the duration of PNAC. PNAC should be detected as early as possible and treated promptly.