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Fulltext Huge brachial plexus schwannoma, masking as a cystic neck mass

Kho JPY, Prepageran N

AME Case Rep, 2018;2:41.
PMID: 30363802 DOI: 10.21037/acr.2018.08.01

Schwannomas are solitary, benign tumors arising from the nerve sheaths. They are frequently reported in the thorax predominantly in the posterior mediastinum, but are rarely seen to arise from the brachial plexus. Schwannomas are well demarcated lesions with a slow insidious growth. Presented is a case of a large brachial plexus schwannoma, masking as a cystic lesion in the lateral neck. The patient presented with concerns of a cystic mass progressively increasing in size over a period of four years, initially symptomless, but later caused numbness and tingling sensation over his right forearm, tip of right thumb and index finger. Following histological confirmation via fine needle aspiration and magnetic resonance imaging, the patient underwent surgical excision where by the tumor was dissected from its attachment to the nerve sheath. The patient recovered well, and by the third day post operatively, his neurological symptoms resolved completely. Upon follow up in clinic 1-week post-surgery, the scar had healed well, and his numbness or tingling sensation remained in abeyance. This case illustrates that a schwannoma may present insidiously as a cystic lesion and its possible origin may arise from the brachial plexus.
Recurrent occipital dermatofibrosarcoma protuberans tackled with wide local excision: A case report and current management

Kho JPY, Ng BHK, John R

Med J Malaysia, 2019 02;74(1):82-84.
PMID: 30846668

Dermatofibrosarcoma protuberans (DFSP) is a slowgrowing, locally invasive tumour of the dermis. It commonly presents in the trunks and proximal extremities but is seen to a lesser extent in the head and neck regions. We present a case report of a recurrent DFSP in a 48-year-old Iban woman at the occipital region. The patient underwent wide local excision and removal of outer table of cranium, dressing followed by split thickness skin graft. Histopathological examination confirmed dermatofibrosarcoma protuberans with clear lateral surgical margins and a deep margin of 0.5mm. She is currently undergoing radiotherapy and is planned for 50Grey 25cycles.
Pilot study comparing steroid-impregnated and non-steroid-impregnated absorbable nasal dressing following endoscopic sinus surgery

Sow YL, Tang IP, Kho JPY, Prepageran N

Med J Malaysia, 2018 08;73(4):244-248.
PMID: 30121688

INTRODUCTION: Endoscopic sinus surgery (ESS) is the mainstay for treatment of chronic rhinosinusitis versus maximal medical therapy. We propose a more economical option, by using steroid-impregnated Gelfoam instead of Nasopore post ESS, as it is less expensive and has showed effectiveness in preventing post-operative bleeding.
MATERIALS AND METHODS: A randomised, double-blinded, placebo-controlled trial was carried out in eight patients with chronic rhinosinusitis or nasal polyposis who were planned for bilateral endoscopic sinus surgery. A Peri-operative Sinus Endoscopy (POSE) Score and Lund-Kennedy Endoscopic Score (LKES) were recorded. The use of hydrocortisone-impregnated Gelfoam dressing versus normal saline-impregnated Gelfoam dressing were compared. Scores were repeated post-operatively at one week, three weeks and three months interval.
RESULTS: For LKES, at the end of three months, 50% of the patients had the same score difference, 37.5% had better results on the study side while 12.5% had better results on the control side. Meanwhile, for POSE Score, at the end of three months, 75% of the patients had better score difference on the study side while 12.5% had better results on the control side.
CONCLUSION: Gelfoam can be used as nasal packing material to deliver topical steroid after endoscopic sinus surgery. Steroid-impregnated nasal dressing after endoscopic sinus surgery may not provide better long-term outcome.
Fulltext Radiological Study of the Ethmoidal Arteries in the Nasal Cavity and Its Pertinence to the Endoscopic Surgeon

Kho JPY, Tang IP, Tan KS, Koa AJ, Prepageran N, Rajagopalan R

Indian J Otolaryngol Head Neck Surg, 2019 Nov;71(Suppl 3):1994-1999.
PMID: 31763282 DOI: 10.1007/s12070-018-1415-3

We studied the ethmoidal arteries using preexisting computer tomography of the paranasal sinuses (CT PNS) and statistically scrutinized data obtained between genders. A descriptive study from 77 CT PNS dated January 2016-December 2016 were collected and reviewed by two radiologists. A total of 54 (108 sides) CT PNS were studied of patients aged 18-77 years. 37 are male, 17 are female; with Bumiputera Sarawak predominance of 25 patients, 12 Malays, 16 Chinese and one Indian. Rate of identification are as follows: anterior ethmoidal artery (AEA)-100%, middle ethmoidal artery (MEA)-30%, posterior ethmoidal artery (PEA)-86%. The average distance from AEA-MEA is 8.1 ± 1.52 mm, MEA-PEA is 5.5 ± 1.29 mm and AEA-PEA is 12.9 ± 1.27 mm. The mean distance from PEA-the anterior wall of sphenoid is 7.7 ± 3.96 mm, and PEA-optic canal is 8.5 ± 3.1 mm with no statistical difference when compared between gender. AEA frequently presented with a long mesentery 57.4%, while 87.1% of PEA was hidden in a bony canal. The vertical distance of the AEA-skull base ranges from 0 to 12.5 mm whilst PEA-skull base is 0-4.7 mm. There is no statistical difference in distances of AEA, MEA nor PEA to skull base when analyzed between genders; t(82) = 1.663, p > 0.05, t(32) = 0.403, p > 0.05 and t(75) = 1.333, p > 0.05 respectively. We newly discovered, that 50% of MEA is hidden in a bony canal, and its distance to skull base ranged 0-5.3 mm. MEA and PEA less commonly have a short or long mesentery. Knowledge on the ethmoidal arteries especially in our unstudied population of diverse ethnicity, gains to assist surgeons worldwide, when embarking in endoscopic transnasal surgeries.