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Dive into the research topics where Hitendra Prakash Singh is active.

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Featured researches published by Hitendra Prakash Singh.


Journal of Laryngology and Otology | 2016

In defence of transpalatal, transpalatal-circumaxillary (transpterygopalatine) and transpalatal-circumaxillary-sublabial approaches to lateral extensions of juvenile nasopharyngeal angiofibroma.

Anupam Mishra; Subhash Chandra Mishra; Verma; Hitendra Prakash Singh; S Kumar; Ashoak Mani Tripathi; B Patel; Singh

BACKGROUND Juvenile nasopharyngeal angiofibroma often presents with lateral extensions. In countries with limited resources, selection of a cost-effective and least morbid surgical approach for complete excision is challenging. METHODS Sixty-three patients with juvenile nasopharyngeal angiofibroma, with lateral extensions, underwent transpalatal, transpalatal-circumaxillary (transpterygopalatine) or transpalatal-circumaxillary-sublabial approaches for resection. Clinico-radiological characteristics, tumour volume and intra-operative bleeding were recorded. RESULTS The transpalatal approach was suitable for extensions involving medial part of pterygopalatine fossa; transpalatal-circumaxillary for extensions involving complete pterygopalatine fossa, with or without partial infratemporal fossa; and transpalatal-circumaxillary-sublabial for extensions involving complete infratemporal fossa, even cheek or temporal fossa up to zygomatic arch. Haemorrhage was greatest with the transpalatal-circumaxillary-sublabial approach, followed by transpalatal approach and transpalatal-circumaxillary approach (1212, 950 and 777 ml respectively). Tumour size (volume) was greatest with the transpalatal-circumaxillary approach, followed by transpalatal-circumaxillary-sublabial approach and transpalatal approach (40, 34 and 29 mm3). There was recurrence in three cases and residual disease in two cases. Long-term morbidity included small palatal perforation (n = 1), trismus (n = 1) and atrophic rhinitis (n = 2). CONCLUSION These modified techniques, performed with endoscopic assistance under hypotensive anaesthesia, without embolisation, offer a superior option over other open procedures with regard to morbidity and recurrences.


Laryngoscope | 2017

Current molecular profile of juvenile nasopharyngeal angiofibroma: First comprehensive study from India

Praveen Pandey; Anupam Mishra; Ashoak Mani Tripathi; Veerendra Verma; Ritu Trivedi; Hitendra Prakash Singh; Sunil Kumar; Brijesh Patel; Vinay Singh; Shivani Pandey; Amita Pandey; Subhash Chandra Mishra

An attempt is made to analyze the molecular behavior of juvenile nasopharyngeal angiofibroma (JNA).


Journal of Laryngology and Otology | 2016

Current status and clinical association of beta-catenin with juvenile nasopharyngeal angiofibroma

Anupam Mishra; Singh; Verma; Pandey S; Ritu Trivedi; Hitendra Prakash Singh; S Kumar; Dwivedi Rc; Subhash Chandra Mishra

OBJECTIVE A possible role of the APC/beta-catenin pathway in the pathogenesis of sporadic juvenile nasopharyngeal angiofibroma has been suggested. This paper presents its current status and clinical association in our patients. METHOD A prospective observational study was conducted at King George Medical University and Central Drug Research Institute, in Lucknow, India. Western blot analysis was undertaken in 16 cases to examine beta-catenin expression. The clinical details were recorded along with follow up observations, to determine associations. RESULTS Up-regulation of beta-catenin expression was seen in 69 per cent of cases. The clinical variables did not reveal significant differences between patients with extremes of expression (extreme under- vs over-expression). However, absent expression was shown exclusively in young adults aged over 18 years, while enhanced expression was associated with an altered facial profile. CONCLUSION Although a beta-catenin association was seen in a subset of our sporadic juvenile nasopharyngeal angiofibroma cases, its expression was not homogeneous. This is in contrast to the Western literature that suggests a universal (homogenous) enhanced expression in the majority. Hence, further research is required to better define its molecular cascade.


International Journal of Head and Neck Surgery | 2016

Syringocystadenoma Papilliferum of External Auditory Canal: A Rare Entity

Sunil Kumar; Hitendra Prakash Singh; Ajay K Singh; Chris de Souza

Syringocystadenoma papilliferum is a benign adnexal tumor that frequently shows apocrine differentiation. It has propensity to develop in the scalp region. It is a rare tumor and usually appears at birth or during puberty, hence, it is also called childhood tumor. Although it may differ in clinical presentation, its histology is characteristic. In this study, we have described the syringocystadenoma papilliferum in the external auditory canal of a 45-year-old female because of its occurrence in an unusual site and in an uncommon age.


Case Reports | 2014

Stridor: an unusual presentation of juvenile nasopharyngeal angiofibroma

Hitendra Prakash Singh; Sunil Kumar; Madhukar Vashishtha; Satya Prakash Agarwal

Nasopharyngeal angiofibroma is a rare and benign disease, which is mainly found in adolescent male subjects. It is usually diagnosed on clinical grounds on the basis of its presenting symptoms of nasal obstruction, nasal mass and most importantly unprovoked recurrent moderate to severe epistaxis. Imaging studies are only needed to confirm the diagnosis and formulate the management plan. A case of juvenile nasopharyngeal angiofibroma is presented here, which presented to us with severe respiratory distress and stridor. Urgent tracheostomy had to be performed before definitive management could be started. Definitive treatment was excision through modified transpalatal with sublabial route, which resulted in successful outcome.


Case Reports | 2014

Congenital asymptomatic absence of unilateral sternocleidomastoid muscle

Hitendra Prakash Singh; Sunil Kumar; Satya Prakash Agarwal

A 56-year-old man visited the ENT (ear-nose-throat) department for his left earache, which revealed the diagnosis of acute otitis externa of fungal origin. He was given standard treatment of aural toilet, antifungal ear drops and analgesics. During routine …


Annals of Botany | 1984

Differences in Osmoregulation in Brassica species

Ashok Kumar; P. K. Singh; D. P. Singh; Hitendra Prakash Singh; Himanshu Sharma


Indian Journal of Otolaryngology and Head & Neck Surgery | 2016

Clinical Predictors of Streptomycin-Vestibulotoxicity

Miraj Ahmed; Anupam Mishra; Kamal Kumar Sawlani; Veerendra Verma; Rajiv Garg; Hitendra Prakash Singh; Sunil Kumar


Indian Journal of Otolaryngology and Head & Neck Surgery | 2016

Huge Osteoclastoma of Hyoid Bone: A Case Report

Hitendra Prakash Singh; Sunil Kumar; Pallavi Aga; Madhu Kumar; Shahab Ali Usmani; Satya Prakash Agarwal


International Journal of Head and Neck Surgery | 2013

Schwannoma Base of Tongue: Report of a Rare Case and Review of Literature

Hitendra Prakash Singh; Sunil Kumar; Nidhi Verma; Madhukar Vashistha; Amit Chaddha; Sp Agarwal; S. V. Suresh Babu; Chris de Souza

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Sunil Kumar

All India Institute of Medical Sciences

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Veerendra Verma

King George's Medical University

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Anupam Mishra

King George's Medical University

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Satya Prakash Agarwal

King George's Medical University

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Subhash Chandra Mishra

King George's Medical University

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Anupam Mishra

King George's Medical University

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Ashoak Mani Tripathi

King George's Medical University

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Ritu Trivedi

Central Drug Research Institute

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S Kumar

King George's Medical University

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Shahab Ali Usmani

King George's Medical University

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