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result(s) for
"Khan, Niyaz"
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Neuroblastoma: Application of International Neuroblastoma Pathology Classification on fine needle aspiration cytology smears
by
Rastogi, Kanika
,
Mahajan, Nidhi
,
Khatri, Arti
in
Biopsy, Fine-Needle
,
Bone marrow
,
Calcification
2022
Background: Neuroblastoma (NB) is the fourth most common tumor of childhood. There is a paucity of literature on its subtyping of cytology and prognostic utility.
Aims: We aimed to study the cytopathological features of NB on the aspirated material, subtype it, and assess the role of International Neuroblastoma Pathology Classification (INPC) classification on cytology smears in the preoperative prognosis of NB.
Materials and Methods: Fifteen cases of NB reported on fine-needle aspiration cytology (FNAC) in the past 3 years were included. Detailed clinical, radiological, and cytological features were noted. Smears were assessed for characteristics such as cellularity, neuroblasts (cytoplasmic, nuclear details), rosettes, neuropil, Schwann cells, fibroblasts, calcification, and necrosis. Afterward, cases were categorized as undifferentiated (UD), poorly differentiated (PD), and differentiating (D) subtypes. Mitotic-karyorrhectic index (MKI) was calculated and correlated with histopathology. Follow-up was done to date.
Results: The age ranged from 19 days to 10 years with an M: F ratio of 3:1. Twelve cases were retroperitoneal, two cervical, and one mediastinal. Metastatic disease was seen in six cases, one to the cervical, four to the bone marrow, and two to the scalp. The International Neuroblastoma Risk Group (INRG) staging system was available in all cases, out of which three were in stage L1, six in stage L2, four in stage M, and two in stage Ms. On cytology, four cases were differentiating NB, five PD NB, and six UD NB. The MKI was high (>4%) in 80% of UD, intermediate (2-4%) in 100% of PD, and low (<2%) in 75% of D cases. MKI corroborated in both histology and cytology, except in one case.
Conclusion: NB can be subtyped on cytology on the basis of characteristics of neuroblasts, presence of neutrophils, rosettes, and necrosis. UD NB has a high MKI and is associated with a poor prognosis. A preoperative comprehensive reporting of NB on cytology can be very useful in guiding appropriate chemotherapy with some increment in survival. However, larger studies are needed to validate the calculation of MKI on FNA smears.
Journal Article
Congenital pouch colon
2017
Congenital pouch colon (CPC) is an unusual abnormality in which a pouch-like dilatation of a shortened colon is associated with an anorectal malformation. It is categorized into four subtypes (Types I-IV) based on the length of normal colon proximal to the colonic pouch. In males, the pouch usually terminates in a colovesical fistula just proximal to the bladder neck. In girls, the terminal fistula opens either into the urethra or in the vestibule, close to the urethral opening. Girls usually have a double vagina with a wide inter-vaginal bridge, a monocornuate uterus on each side, and urinary incontinence due to a widely open bladder neck. Associated major malformations are uncommon with CPC but sometimes, especially in reports from outside India, major abnormalities are present suggesting an early, severe error in embryogenesis. The more severe Types I/II CPC can usually be diagnosed by a large gas shadow or air-fluid level on X-Ray abdomen. For all subtypes of CPC, it is preferable to preserve a segment of the pouch by fashioning a narrow colonic tube for pull-through, the technique known as coloplasty or tubular colorraphy. Girls need additional management of the genitourinary abnormalities. Postoperatively, fecal continence levels are usually poor, especially with Types I/II CPC.
Journal Article
Evaluation of risk factors affecting outcome in outborn surgical neonates
2021
Background: Mortality in surgical neonates contributes to neonatal mortality rates. The study was conceptualized to study clinical and nonclinical factors affecting mortality in surgical neonates so that timely intervention could result in improved survival of the neonates.
Materials and Methods: The study was initiated after approval from the institutional ethics committee and included 120 surgical neonates over a period of 18 months after obtaining consent from the parents/caregivers. Predesigned pro forma was used to record the details of antenatal care received, place of birth, travel history, maternal education and gestational age, and clinical condition at the time of admission. Values of biochemical tests such as serum electrolytes, serum creatinine, and arterial blood gasses were recorded. The need of inotrope support, blood or blood product transfusion, and postoperative ventilator support and intensive care unit (ICU) care was recorded. The results of the two groups, i.e., survivals and mortality, were compared. Outcome was recorded as mortality at 30 days or earlier.
Results: Irrespective of the surgical condition, the survival rate was significantly better in those babies who weighed more than 2.5 kg at the time of admission, had capillary refill time of <3 s, had serum ionized calcium levels more than 1 mmol/L, and did not require inotropes, blood or blood product transfusion, and postoperative ICU care and ventilator support. The place of birth, educational status of the mother, gestational age, and distance traveled for care had no statistically significant effect on survival.
Conclusion: There is a statistically significant correlation between the survival of the babies who weighed more than 2.5 kg and are more physiologically preserved at the time of admission. Mortality rates can be decreased by timely interventions to reduce the need of inotropes, blood or blood products, and ICU care and ventilator support during their postoperative recovery.
Journal Article
Anaplastic rhabdomyosarcoma of upper lip in a 3-year-old girl
2022
Rhabdomyosarcoma is an aggressive malignant striated muscle neoplasm commonly seen in children involving orbit, paranasal sinuses, cheek, tongue, and rarely upper lip. The anaplastic subtype is further rare and associated with poor prognosis. Herein, we report a 3-year-old female with this uncommon variant at an uncommon site.
Journal Article
Correlation of Kinetic and Rheological Data for Flexible Nanoparticle Catalysis in the Reaction of Piperidine with PS
by
Khalid, Khalisanni
,
Zain, Sharifuddin Md
,
Noh, Muhammad Azri Mohd
in
Binding
,
Catalysis
,
Chemistry
2016
The effect of apparent catalysis at different concentration of flexible nanoparticles (FN), (FN = CTABr|MX|H
2
O) of piperidine with phenyl salicylate ion when substituted sodium phenolate [MX] ≠ 0 at 35 °C is discussed in this paper. The observed data (k
obs
vs. [MX]) have been discussed quantitatively based on pseudophase micellar (PM) model. Such data treatment gives relative micellar binding constants of counterion X
−
and Br
−
(R
X
Br
) with FN. The effects of [MX] on the k
obs
have been coherence in terms of empirical equation and rheological data. The large catalytic effect of FN on the rate of piperidinolysis of PS
−
and rheological evidence of micellar structure correlate to the relative counterion binding constant, R
X
Br
.
Graphical Abstract
Journal Article
Laparoscopic surgery in pediatric upper tract urolithiasis: An alternate modality
by
Sengar, Mamta
,
Mohta, Anup
,
Gupta, Chhabi
in
Calculi, Urinary
,
Developing countries
,
laparoscopic pyelolithotomy
2021
Introduction: Incidence of pediatric urolithiasis has increased over the last few decades. Procedures such as extracorporeal short wave lithotripsy, percutaneous nephrolithotripsy, and ureterorenoscopic lithotripsy are not widely available for pediatric age group in many developing countries. It is desirable that advantages of minimally invasive surgery be offered to selected cases with urolithiasis.
Materials and Methods: All patients with pediatric upper tract urolithiasis managed laparoscopically from January 2015 to April 2020 were retrospectively reviewed.
Results: A total of 38 patients were included. The mean age of the patients was 8 ± 2.85 years. Thirty-four patients (renal and upper ureteric) were managed through retroperitoneal approach, while those with lower ureteric calculi (n = 4) were approached transperitoneally. A total of eight patients required conversion to open technique. The stone clearance rate was 79% by laparoscopic approach alone. There were no procedure-related complications.
Conclusion: Our study suggests that laparoscopic management for pediatric upper tract urolithiasis is a radiation-free, single-time curative treatment and is feasible in centers where facilities for other endoscopic procedures are unavailable.
Journal Article
Newer insights into prostatic utricle in proximal hypospadias
2022
Introduction: Prostatic utricles (PUs) are the remnants of Mullerian ducts found in the male posterior urethra. Enlarged symptomatic utricles are known to be associated with hypospadias. There is a dearth of literature defining an enlarged utricle and also its clinical significance.
Aims: The aim of this study was to describe anatomical difference of PUs of cases with severe hypospadias and also to find their clinical significance if any.
Materials and Methods: A prospective study was carried out, and all patients with proximal hypospadias were enrolled. Cystoscopy was performed in all cases. Symptomatology, size, and location of PU were recorded. PU of >0.5 cm was considered enlarged.
Results: In the present series, a total of 70 cases were included over a period of 2 years. Enlarged utricle was found in 47/70 (67.14%) on cystoscopy. They were wide-mouthed and negotiated 9 Fr/11 Fr cystoscope with ease. Recurrent epididymo-orchitis, recurrent urinary tract infection, and obstructive features were the most common complications requiring intervention.
Conclusions: PUs in boys with hypospadias are enlarged as well as wide-mouthed. Most of these remain asymptomatic, but few of them carry the potential of complications. Cystoscopy helps in direct visualization of utricular anatomy, so it should be a preferred investigating modality for investigating a PU.
Journal Article
Massive ovarian edema: An extremely rare cause of ovarian mass in a 7-year-old girl
2020
The hematological, biochemical investigations and tumor markers (CA-125, alpha-fetoprotein, and human chorionic gonadotropin) were within the normal limits. Contrast-enhanced computed tomography (CECT) showed bilateral enlarged ovaries with the presence of solid component in the right ovary, suggestive of a neoplasm [Figure 1]a. In view of the radiological findings and an increased ovarian size, right salpingo-oophorectomy with left ovarian biopsy was planned. [...]this case highlights the importance of recognizing massive ovarian edema which can be confused with ovarian neoplasm.
Journal Article
Pediatric colorectal carcinoma: A series of seven cases
2022
Introduction: Colorectal carcinoma (CRC) accounts for <1% of all the neoplasms of children. Unfavorable histology and delayed diagnosis often result in poor outcome. This study aimed to investigate the clinical characteristic and prognosis of pediatric patients with CRC.
Materials and Methods: A retrospective review of medical records of all patients diagnosed of CRC between 2015 and 2020 was performed. Data regarding gender, age, location, and histopathology were collected.
Results: Seven children (5 males and 2 females) were included in the study. Age ranged between 8.6 and 11.8 years. Abdominal pain was the most common symptom. The duration between onset of symptoms to the diagnosis ranged from 5 days to 8 months. Right-sided tumors were more common than the left side. Histopathological examination showed mucinous adenocarcinoma in four/seven patients and signet cell variant was seen in 2/7. Immunohistochemistry was positive for cytokeratin and beta-catenin, however, all microsatellite instability markers were found negative. Despite surgical treatment and chemotherapy, four of our cases faced mortality and one patient was lost to follow-up.
Conclusion: CRC can present in first decade of life and often misdiagnosed. Pediatric CRC has distinct tumor biology and shares a poor prognosis. Paucity of literature from the Indian subcontinent should urge further clinicopathological trials for establishing etiology and for refining treatment recommendations in these children.
Journal Article
Correlation of the position of the anal dimple with the caudal termination of the striated muscle complex in patients with anorectal malformations
by
Gupta, Amit
,
Khan, Niyaz
,
Chadha, Rajiv
in
Advertising executives
,
anal dimple
,
anorectal malformation
2022
Background: In children with anorectal malformations (ARM), the vertical fibres of the striated muscle complex (SMC) are believed to be located within the limits of the anal dimple (AD).
Methods: Forty five cases of ARM underwent posterior sagittal anorectoplasty (PSARP), median age 8.5 months. During PSARP the anterior, posterior limits and midpoint of the AD and SMC were marked. The location of AD was correlated with SMC.
Results: A 'well developed' AD and SMC was seen in 80 % and 86.7 % patients respectively. The mean width of the AD and SMC was more in females than in males (20.96 vs. 18.98 mm and 14.24mm vs. 13.45mm respectively). In 36 cases (80 %), across the spectrum of ARM, the SMC was posterior in relation to the AD. In 7 cases (15.5 %) it correlated in position with the AD and in 2 cases (4.44 %), it was anterior to the AD.
Conclusions: In the majority of cases AD and SMC were 'well developed' and the location of the SMC does not correlate with that of the AD. This has significant practical value in the important step of optimizing the placement of the rectum through the center of the SMC during repair.
Journal Article