Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item Presentation of disseminated neuroblastoma mimicking Bell’s palsy: a case report(BioMed Central, 2025-01) Gunawardana, S.; Jogaprajahpan, G.; Dayasiri, K.BACKGROUND Neuroblastoma is an embryological malignancy of neural crest cells that may have diverse presentations owing to direct effects, metastases, or paraneoplastic syndromes. Facial nerve palsy is an extremely rare presentation of neuroblastoma.CASE PRESENTATION A previously healthy 1-year-and-10-month-old Sinhalese girl presented with difficulty in closing her left eye for 2 weeks, preceded by deviation of her mouth to opposite side. Initial physical examination was normal, apart from left lower-motor-type facial nerve palsy. Initial laboratory investigations were also normal. A tentative diagnosis of Bell's palsy was made. However, magnetic resonance imaging of the brain was performed owing to the incidental detection of a painless bulge in the left zygomatic region with overlying skin bruising, in the absence of any preceding trauma. Magnetic resonance imaging of the brain revealed a soft-tissue mass in the left lateral orbital wall, extending to the body of the sphenoid and bulging into the left anterior fossa. Contrast-enhanced computed tomography of the abdomen, performed subsequently, showed an intra-abdominal large paravertebral soft-tissue mass. Histology of the abdominal mass confirmed poorly differentiated neuroblastoma.CONCLUSION Facial nerve palsy is well recognized to have a myriad of underlying etiologies, including hematological malignancies, solid tumors, and paraneoplastic syndromes. However, its timely diagnosis is often challenging in the absence of other supportive clinical features. These children need careful and thorough evaluation for malignancies before commencing steroids, especially when underlying malignancy is likely.Item Acute hemolytic crisis complicated with ischemic cardiac injury and methemoglobinaemia following ingestion of naphthalene: a case report(BioMed Central, 2024-12) Dayasiri, K.; Pathiraja, H.; Thadchanamoorthy, V.BACKGROUND Naphthalene is an aromatic hydrocarbon that potentially produces methemoglobinaemia but rarely causes hemolysis, especially in children with underlying glucose-6-phosphate dehydrogenase deficiency. Although ingestion of a single moth ball by an older child may not be life threatening, it can be fatal if ingested by a toddler. CASE PRESENTATION A 2-year-old Singhalese boy developed acute severe hemolysis and methemoglobinaemia following ingestion of a mothball. On admission, the patient was ill and pale. The child was tachycardic and tachypnoiec with oxygen saturation of 76% on air. Blood investigations showed significant anemia, elevated reticulocytes, and evidence of hemolysis in a blood picture, along with elevated lactate dehydrogenase and indirect bilirubin. Child also had ST depressions on electrocardiogram examination with negative troponin-I. He was given four packed red blood cell (PRBC) transfusions and was successfully discharged in 3 days time following optimal supportive treatment. A glucose-6-phosphate dehydrogenase assay confirmed the diagnosis of glucose-6-phosphate dehydrogenase deficiency in this child: 0.9 U/gHb (4.0-13.0 U/gHb).CONCLUSION This case report highlights a rare life-threatening presentation of naphthalene ingestion in a child with previously undiagnosed glucose-6-phosphate dehydrogenase deficiency. Ingestion of even a single moth ball can be fatal in vulnerable children given the altered toxicokinetics of naphthalene in children.Item Acute appendicitis during the recovery phase of dengue hemorrhagic fever: two case reports(BioMed Central, 2022) Thadchanamoorthy, V.; Ganeshrajah, A.; Dayasiri, K.; Jayasekara, N.P.Background: Dengue fever is one of the most common tropical diseases, with high prevalence in many tropical countries including Sri Lanka. Dengue infection can present from subclinical infection to dengue shock syndrome. Further, the disease also shows a variety of atypical presentations and has been reported to mimic a number of causes of acute abdomen. Case presentation: The authors report two children (a 6-year-old Tamil girl and an 8-year-old Muslim girl) who were diagnosed to have acute appendicitis during the early recovery phase of dengue hemorrhagic fever (DHF) and late recovery period of dengue hemorrhagic fever with platelet count of 92 × 103/cumm and 102 × 103/cumm, respectively. Both children were investigated with abdomen ultrasound as they developed severe abdominal pain and tenderness on palpation during the recovery phase, which was felt to be very unusual. Acute appendicitis was diagnosed in one child, while the other child had a ruptured appendicular abscess. Both children were treated with laparoscopic appendectomy and a 7-day course of intravenous antibiotics. Both children were reviewed in 1 month following treatment and had complete recovery. Conclusion: Although precise pathophysiology and associations of the surgical abdomen with dengue fever remain to be elucidated, there are known factors in dengue fever that can potentially lead to secondary bacterial infections and surgical abdomen. Awareness and increased suspicion by the clinician are paramount to detect such complications early, especially in children who demonstrate unusual clinical features during various stages of dengue infection.Item Expanded dengue syndrome presenting with acute liver failure, acute kidney injury, pancreatic involvement, coagulopathy, and multiple intracranial hemorrhages in a young child: a case report(BioMed Central, 2022) Thadchanamoorthy, V.; Dayasiri, K.Background: Dengue is a mosquito-borne viral infection that typically occurs in tropical and subtropical countries. The clinical manifestations of dengue infection range from an asymptomatic subclinical course to severe dengue shock syndrome. Besides, dengue can affect any organ in the body and can present with atypical manifestations. Case presentation: We report a 6-year-old previously healthy Tamil child who had dengue complicated with multiorgan involvement. She initially presented with high fever, headache, body aches for 5 days, blood and mucus diarrhea, hematuria, and right knee joint swelling for 2 days. Dengue NS1 antigen was positive on day 2 of febrile illness. She was managed symptomatically in the local hospital for 3 days and transferred to the tertiary care hospital for further management. She was eventually diagnosed as having dengue hemorrhagic fever complicated with multiorgan involvement including acute liver failure, pancreatic involvement, coagulopathy, arthritis, acute kidney injury, and multiple intracranial hemorrhages. The constellation of disease manifestations was identified as expanded dengue syndrome. She was managed with fresh blood, platelet, and cryoprecipitate transfusions and intravenous antibiotics in addition to renal and liver support in the intensive care unit. On day 14 of illness, she deteriorated while on the ventilator and died due to multiple intracranial hemorrhages. Conclusion: The reported child with dengue hemorrhagic fever developed several unusual presentations such as acute liver and renal failure, disseminated intravascular coagulopathy, pancreatic involvement, and multiple intracranial hemorrhages, which form part of expanded dengue syndrome. In the seriously unwell child, it is important to look for unusual complications actively to improve outcomes.Item Fifteen-minute update: International normalised ratio as the treatment end point in children with acute paracetamol poisoning(BMJ Pub. Group,London, 2023) Dayasiri, K.; Rao, S.Paracetamol is one of the most frequent reasons for poisonings across the UK with an estimated 90,000 patients and 150 deaths annually. International normalised ratio (INR) may be elevated due to hepatocellular damage and is frequently used to monitor progress on N-acetyl cysteine. N-acetyl cysteine is associated with reduced activity of vitamin K dependent clotting factors leading to a benign elevation of INR. In asymptomatic children with normal aspartate transaminase/alanine transaminase, isolated borderline elevation of INR following paracetamol overdose should be reviewed for possible N-acetyl cysteine induced elevation of INR. Due to these factors, in those with borderline persistent elevation of INR, N-acetyl cysteine can be safety stopped if INR is falling on two or more consecutive tests and is <3.0.Item Fifteen-minute consultation: Evaluation of paediatric torticollis.(BMJ Pub. Group, 2023) Dayasiri, K.; Rao, S.Torticollis refers to a state in which the neck is twisted due to excessive contraction or shortening of the muscles on one side. Congenital muscular torticollis, which is more common than acquired torticollis, has an incidence of 0.3%-1.9% among all live births. The clinical approach to torticollis depends on the age at presentation, duration of torticollis and presenting symptoms. The underlying aetiology for torticollis varies with the age of the child. Torticollis can be a presenting feature for life-threatening conditions and thus requires careful evaluation.