MyMedR

Basaloid Nasopharyngeal Carcinoma: An Entity That Remains Oblivious

Ganeson SK, Saniasiaya J, Mohamad I, Abdul Gani N

Gulf J Oncolog, 2020 Sep;1(34):83-86.

INTRODUCTION: Basaloid squamous cell carcinoma of the nasopharynx is a rare entity with only scarce cases reported in the English Literature. It is a histological variant of squamous cell carcinoma with aggressive nature and comprises of both basal cell carcinoma and squamous cell carcinoma.

CASE PRESENTATION: Herein, we report on a middleaged male who presented with left-sided spontaneous epistaxis and aural fullness with no neck node which turned out to be basaloid cell carcinoma of nasopharynx.

DISCUSSION AND CONCLUSION: We highlight high clinical suspicion of rare variant of nasopharyngeal carcinoma although no palpable node was evident upon presentation.

Fulltext Simple question towards diagnosis: Did you eat fish?

Mohamad I, Abdul Manab FW

Malays Fam Physician, 2017;12(3):40-41.

PMID: 29527281 MyJurnal

Fulltext Infantile wryneck: report of 2 cases

Saniasiaya J, Mohamad I, Abdul Rahman SK

Braz J Otorhinolaryngol, 2016 06 22;86(3):389-392.

PMID: 27388958 DOI: 10.1016/j.bjorl.2016.05.011

Challenges in conducting post graduate otorhinolarygology-head and neck surgery specialty examination in the time of pandemic

I Mohamad I, Hamizan A, Abdullah B

Med J Malaysia, 2021 08;76(Suppl 4):45-48.

PMID: 34558559

No abstract provided.

Cognitive Function Among Obstructive Sleep Apnea Patients in North East Malaysia

Yusop CYC, Mohamad I, Mohammad WMZW, Abdullah B

J Natl Med Assoc, 2017 04 03;109(3):215-220.

PMID: 28987252 DOI: 10.1016/j.jnma.2017.03.004

INTRODUCTION: Obstructive sleep apnea patients may develop deficits in the cognitive domains of attention, concentration, executive function, verbal and visuospatial memory, constructional abilities, and psychomotor functioning. As cognitive performance will improve with the treatment, early screening for cognitive dysfunction should be done to prevent further deterioration.

OBJECTIVE: We aim to evaluate the cognitive function of obstructive sleep apnea patients by using the 'Mini Mental State Examination'.

METHODOLOGY: This was a cross sectional study to evaluate the cognitive function of moderate and severe obstructive sleep apnea patients with age ranged from 18 to 60 old who attended our sleep clinic. These patients were confirmed to have moderate and severe obstructive sleep apnea by Type 1 polysomnography (attended full overnight study). The age, gender and ethnicity were noted and other relevant data such as weight, height, body mass index and apnea and hypopnoea index were recorded accordingly. The cognitive function was evaluated using validated Malay version of Mini Mental State Examination which measured 5 areas of cognitive functions comprising orientation, registration, attention and calculation, word recall and language abilities, and visuospatial.

RESULTS: A total of 38 patients participated in this study. All 19 patients of moderate group and 14 patients of severe group had normal cognitive function while only 5 patients in severe group had mild cognitive function impairment. There was a statistically significant difference between the moderate group and severe group on cognitive performance (p value = 0.042).

CONCLUSIONS: Severe obstructive sleep apnea patients may have impaired cognitive function. Mini Mental State Examination is useful in the screening of cognitive function of obstructive sleep apnea patients but in normal score, more sophisticated test batteries are required as it is unable to identify in 'very minimal' or 'extremely severe' cognitive dysfunction.

Fulltext Laser posterior cordectomy for bilateral abductor vocal cord palsy : a case report

Mohamad I, Jihan WS, Mohamad H, Abdullah B

Malays J Med Sci, 2008 Jan;15(1):42-3.

PMID: 22589614

Bilateral abductor vocal cord palsy is comparatively a rare vocal cord lesion, especially in a patient with no history of neck mass, previous surgery or trauma. Many patients are not stridulous. A patient presenting with stridor may need emergency airway management before the other treatment is commenced. We report a case of bilateral abductor palsy which required an emergency tracheostomy and subsequently a laser posterior cordectomy.

Single-nucleotide polymorphisms and mRNA expression of CYP1B1 influence treatment response in triple negative breast cancer patients undergoing chemotherapy

Abdul Aziz AA, Md Salleh MS, Mohamad I, Krishna Bhavaraju VM, Mazuwin Yahya M, Zakaria AD, et al.

J Genet, 2018 Dec;97(5):1185-1194.

PMID: 30555068

Triple negative breast cancer (TNBC) is typically associated with poor and interindividual variability in treatment response. Cytochrome P450 family 1 subfamily B1 (CYP1B1) is a metabolizing enzyme, involved in the biotransformation of xenobiotics and anticancer drugs. We hypothesized that, single-nucleotide polymorphisms (SNPs), CYP1B1 142 C>G, 4326 C>G and 4360 A>G, and CYP1B1 mRNA expression might be potential biomarkers for prediction of treatment response in TNBC patients. CYP1B1 SNPs genotyping (76 TNBC patients) was performed using allele-specific polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism methods and mRNA expression of CYP1B1 (41 formalin-fixed paraffin embeddedblocks) was quantified using quantitative reverse transcription PCR. Homozygous variant genotype (GG) and variant allele (G) of CYP1B1 4326C>G polymorphism showed significantly higher risk for development of resistance to chemotherapy with adjusted odds ratio (OR): 6.802 and 3.010, respectively. Whereas, CYP1B1 142 CG heterozygous genotype showed significant association with goodtreatment response with adjusted OR: 0.199. CYP1B1 142C-4326G haplotype was associated with higher risk for chemoresistance with OR: 2.579. Expression analysis revealed that the relative expression of CYP1B1 was downregulated (0.592) in cancerous tissue compared with normal adjacent tissues. When analysed for association with chemotherapy response, CYP1B1 expression was found to be significantly upregulated (3.256) in cancerous tissues of patients who did not respond as opposed to those of patients who showed response to chemotherapy. Our findings suggest that SNPs together with mRNA expression of CYP1B1 may be useful biomarkers to predict chemotherapy response in TNBC patients.

microRNA expression and recurrence risk prediction in Triple Negative Breast Cancer patients

AbdulAziz A, MdSalleh M, Mohamad I, Bhavaraju V, Gan S, Ankathil R

Ann Oncol, 2017 Oct;28 Suppl 9:ix79.

PMID: 32120675 DOI: 10.1093/annonc/mdx697.022

Fulltext Masked rhinolith: The significance of unilateral symptom

Mohamad I, Arul Arumugam P

Malays Fam Physician, 2013;8(1):42-4.

PMID: 25606268 MyJurnal

This is a case report of an 11-year old child who was suffering from rhinorrhoea for five years. As there was no history of foreign body insertion into the nose, the diagnosis of a nasal problem was not suspected. Furthermore, the initial presentation of unilateral rhinorrhoea (nasal discharge) masked the suspicion of other pathologies. The child was treated for allergic rhinitis until she presented herself to our attention whereby a rhinoscopy was performed, showing a rhinolith.

A parapharyngeal meningioma presenting as a neck mass and multiple cranial nerve palsies

Mohamad I, Abdullah B, Idris Z, Naik VR, Bhavaraju VM

Ceylon Med J, 2011 Jun;56(2):73-4.

PMID: 21789871

Fulltext Malignant melanoma of parotid gland in a child-our unique experience

Apparau D, Apparau H, Mohamad I, Bhavaraju VMK

AME Case Rep, 2018;2:4.

PMID: 30264000 DOI: 10.21037/acr.2018.01.06

Malignant melanoma (MM) of parotid gland is a rare condition. This pathology is often a result of secondary metastasis from primary lesions in the head and neck skin. A MM arising de novo in parotid gland is very rare. This malignant tumour is more prevalent in adults rather than children and it tends to have several distinct features. Treatment options are limited especially for an advanced lesion. Despite best treatments this condition carries a poor prognosis. This case details our experience in treating a child with MM of parotid gland without other primary cutaneous lesions.

Fulltext A measles IgM rapid diagnostic test to address challenges with national measles surveillance and response in Malaysia

Senin A, Noordin NM, Sani JAM, Mahat D, Donadel M, Scobie HM, et al.

PLoS One, 2024;19(3):e0298730.

PMID: 38483868 DOI: 10.1371/journal.pone.0298730

INTRODUCTION: A lateral flow rapid diagnostic test (RDT) enables detection of measles specific immunoglobulin M (IgM) antibody in serum, capillary blood, and oral fluid with accuracy consistent with enzyme immunoassay (EIA). The objectives of the study were: 1) to assess measles RDT inter-reader agreement between two clinic staff; 2) to assess the sensitivity and specificity of the measles RDT relative to standard surveillance testing in a low transmission setting; 3) to evaluate the knowledge, attitudes, and practices of staff in clinics using the RDT; and 4) to assess the impact of RDT testing on the measles public health response in Malaysia.

MATERIALS AND METHODS: The clinic-based prospective evaluation included all suspected measles cases captured by routine measles surveillance at 34 purposely selected clinics in 15 health districts in Malaysia between September 2019 and June 2020, following day-long regional trainings on RDT use. Following informed consent, four specimens were collected from each suspected case, including those routinely collected for standard surveillance [serum for EIA and throat swabs for quantitative reverse transcriptase polymerase chain reaction (RT-qPCR)] together with capillary blood and oral fluid tested with RDTs during the study. RDT impact was evaluated by comparing the rapidity of measles public health response between the pre-RDT implementation (December 2018 to August 2019) and RDT implementation periods (September 2019 to June 2020). To assess knowledge, attitudes, and practices of RDT use, staff involved in the public health management of measles at the selected sites were surveyed.

RESULTS: Among the 436 suspect cases, agreement of direct visual readings of measles RDT devices between two health clinic staff was 99% for capillary blood (k = 0.94) and 97% for oral fluid (k = 0.90) specimens. Of the total, 45 (10%) were positive by measles IgM EIA (n = 44, including five also positive by RT-qPCR) or RT-qPCR only (n = 1), and 38 were positive by RDT (using either capillary blood or oral fluid). Using measles IgM EIA or RT-qPCR as reference, RDT sensitivity using capillary blood was 43% (95% CI: 30%-58%) and specificity was 98% (95% CI: 96%-99%); using oral fluid, sensitivity (26%, 95% CI: 15%-40%) and specificity (97%, 95% CI: 94%-98%) were lower. Nine months after training, RDT knowledge was high among staff involved with the public health management of measles (average quiz score of 80%) and was highest among those who received formal training (88%), followed by those trained during supervisory visits (83%). During the RDT implementation period, the number of days from case confirmation until initiation of public response decreased by about 5 days.

CONCLUSION: The measles IgM RDT shows >95% inter-reader agreement, high retention of RDT knowledge, and a more rapid public health response. However, despite ≥95% RDT specificity using capillary blood or oral fluid, RDT sensitivity was <45%. Higher-powered studies using highly specific IgM assays and systematic RT-qPCR for case confirmation are needed to establish the role of RDT in measles elimination settings.

Traumatic Neck Injury: An Accidental Impalement by a Needlefish

Ali AA, Gurung R, Hayati F, Zakaria AD, Mohamad I, Ching FF

Wilderness Environ Med, 2021 Dec;32(4):517-521.

PMID: 34479771 DOI: 10.1016/j.wem.2021.07.006

Encounters between marine animals and humans can result in critical injury and fatal complications. We highlight a 20-y-old male who sustained a penetrating injury to the neck as a result of impalement by needlefish (Tylosurus sp) while snorkeling. He sustained a penetrating injury in the posterior triangle of the neck. On presentation, he was stabilized and received empirical antibiotics, analgesia, and antitetanus toxoid injection before being transferred to a tertiary center. On presentation to the tertiary hospital, the patient was hemodynamically stable with no clinical evidence of injury to surrounding neck structures, and this was confirmed using computed tomography. The patient underwent local wound exploration and retrieval of the needlefish beak under general anesthesia. The wound was left open to heal by secondary intention. The patient was discharged with oral antibiotics and went on to make a complete recovery.

Pediatric lupus nephritis presenting with terminal renal failure

Besouw MT, Vande Walle JG, Ilias MI, Raes AM, Prytula AA, Claeys L, et al.

Acta Clin Belg, 2016 Dec;71(6):455-457.

PMID: 27169353

A 12-year-old Congolese girl presented with acute renal failure, edema, hypertension, hemoptysis, hematuria, and proteinuria after a history of throat infection. Renal ultrasound showed kidneys of normal size, with increased echogenicity of the cortical parenchyma and decreased corticomedullary differentiation. Other additional investigations showed pancytopenia with decreased complement (low C3 and C4). Antinuclear antibodies were strongly positive, including anti-double stranded DNA. Renal biopsy confirmed severe grade IV lupus nephritis. She was treated with high-dose steroids, mycophenolate mofetil and hydroxychloroquine, in addition to hemodialysis. After one week of intensive treatment, diuresis recovered and dialysis could be stopped after six sessions. We describe an uncommon case of severe lupus nephritis, presenting with terminal renal failure. Since the rarity of this disease presentation, other more common diagnoses have to be considered. Once the diagnosis of lupus nephritis is established, a choice has to be made between the different induction treatment protocols. The patient's ethnic background and other supportive therapies, such as the need for dialysis, can help to make this choice.

Fulltext Missed by RTK, caught by PCR, unimagined chest Radiograph

Mazlan MZ, Mohamad I, Deris ZZ

Vis J Emerg Med, 2021 Oct;25:101194.

PMID: 34642642 DOI: 10.1016/j.visj.2021.101194

Detection of dynorphin 1-17 biotransformation fragments in human nasal polyps by UPLC-QTOF-MS

Ballouze R, Ismail MN, Abu Kassim NS, Salhimi SM, Mohamad I, Abd Mutalib NS, et al.

Anal Bioanal Chem, 2024 Jan;416(2):545-557.

PMID: 38040942 DOI: 10.1007/s00216-023-05061-3

Chronic rhinosinusitis with nasal polyps (CRSwNP) is a persistent inflammation of the sinonasal mucosa. CRSwNP treatments are associated with inconsistent efficacy and recurrence of symptoms. Dynorphin 1-17 (DYN 1-17) and its fragments have been shown to modulate the immune response in various inflammatory conditions. This study aimed to investigate the effect of different pH and degrees of inflammation on DYN 1-17 metabolism in human CRSwNP tissues. DYN 1-17 was incubated with grade 3 and grade 4 inflamed tissues of CRSwNP patients at pH 5.5 and pH 7.4 over a range of incubation periods. The resulting fragments were identified using an ultra-performance liquid chromatography (UPLC) system coupled to quadrupole-time of flight (QTOF) mass spectrometry based on their accurate mass. The rate of DYN 1-17 fragmentation was slower at pH 5.5 in comparison to pH 7.4. The extent and rate of metabolism of DYN 1-17 were much lower in grade 3 inflamed tissue (31-32 fragments) than in grade 4 (34-41 fragments). N-Terminal fragments (DYN 1-15, 1-11, 1-10, and 1-6) were metabolized slower at pH 5.5 as compared to pH 7.4. DYN 1-12, 1-8, 2-10, 4-10, 5-10, and 8-14 were only observed under the inflammatory pH while DYN 5-17 and 6-17 were only identified upon incubation with grade 4 CRSwNP tissues. DYN 1-17 metabolism was significantly affected by the pH level and the severity of the inflammation of CRSwNP tissues, indicating the potential roles of DYN 1-17 and its fragments in modulating the inflammatory response and their avenue as therapeutics in future studies.

Nasal NK/T-cell Lymphoma Presenting as Acute Inflammation of Nasal Vestibule

Vasiwala R, Mohamad I, Venkateswaran SP, Hamzah SZ

Indian J Otolaryngol Head Neck Surg, 2019 Nov;71(Suppl 3):1986-1989.

PMID: 31763280 DOI: 10.1007/s12070-018-1402-8

Extra nodal nasal NK/T cell lymphoma is relatively a rare type of non-Hodgkin lymphoma. Variable clinical presentation with rapidly progressive necrosis of the cartilaginous and bony wall of the nose and upper respiratory passages leads to delayed diagnosis and treatment. A 43-years-old patient presented with right nasal pain and furuncle-like swelling. The swelling progressed rapidly to cellulitis to the face up to the right eye. Within 2 months, it had advanced to necrosis of the lateral vestibular cartilage, medial maxillary wall, turbinate and nasal septal cartilage. Biopsy reported as non-Hodgkin diffuse T cell (angiocentric T cell) lymphoma.

Fulltext Papillary thyroid carcinoma presenting with intraluminal tracheal mass symptoms

Mohamad I, Haron A

Med J Malaysia, 2013 Apr;68(2):164-5.

PMID: 23629566 MyJurnal

Papillary thyroid carcinoma is a common thyroid malignancy reported world wide. It affects females more commonly in the 4th to 6th decades of life. The patients usually present with a painless anterior neck mass and occasionally with lymph node involvement. We report a case of an elderly male who presented with hoarseness and hemoptysis, which warranted bronchoscopy. Biopsy of the intraluminal tracheal mass revealed the diagnosis of papillary thyroid carcinoma. Computed tomography scan of the neck confirmed the presence of the primary lesion in the right thyroid lobe with invasion into the adjacent trachea and esophagus.

Fulltext Rhinolith: An important cause of foul-smelling nasal discharge

Yaroko A, Mohamad I, Hashim H

Malays Fam Physician, 2014;9(1):30-2.

PMID: 25606296 MyJurnal

Rhinoliths result from neglected nasal foreign bodies that gradually increase in size. They are usually discovered incidentally during routine ENT examination or due to the associated symptoms such as nasal obstruction or persistent foul-smelling unilateral nasal discharge. A case of a 14-year-old girl was reported with a year history of the symptom. The foul-smelling nasal discharge noted by her mother was not the main concern to them. She was referred by her primary care physician as she complained of impacted ear wax. However, rhinolith was incidentally found upon routine clinical examination in the ENT clinic and was removed uneventfully.

Fulltext Bilateral vocal cord palsy post thyroidectomy: lessons learnt

Misron K, Balasubramanian A, Mohamad I, Hassan NF

BMJ Case Rep, 2014;2014.

PMID: 24663247 DOI: 10.1136/bcr-2013-201033

Bilateral vocal cord paralysis is a known possible complication following thyroid surgery. It owes to the close relationship between the recurrent laryngeal nerve and the thyroid gland. The most feared complication of bilateral vocal cord paralysis is airway compromise. We report the case of a 39-year-old woman who underwent total thyroidectomy for multinodular goitre. The surgery was uneventful. However she developed stridor in the recovery bay needing intubation. We postulate that the cause was attributed to bilateral vocal cord paresis due to the use of the intraoperative nerve monitoring (IONM) whose high setting throughout the surgery was overlooked. She made a complete recovery without the need of a tracheostomy. We share our lessons learnt from this case.

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