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First Local Experience of Intra-Cavitary Yttrium-90 Citrate Colloid Irradiation via Ommaya Reservoir for Refractory Cystic Craniopharyngioma: a Case Report

Razak NA, Ping PC, Kamarulzaman K, Hassan SZA

Nucl Med Mol Imaging, 2024 May;58(3):129-139.
PMID: 38633287 DOI: 10.1007/s13139-024-00838-5

Craniopharyngioma is uncommon benign intracranial tumour that can be cured by surgical resection followed by conventional radiotherapy. However, its anatomical localisation makes the treatment hazardous or impossible. This case report aims to discuss the first local experience of using beta-emitting Yttrium-90 radioisotope in treating a patient with refractory cystic craniopharyngioma. A 43-year-old male who has underlying refractory cystic craniopharyngioma complicated with visual impairment and panhypopituitarism was referred to our nuclear medicine department for intra-cavitary irradiation therapy. Initially, he was presented with blurring of vision and headache which he had two previous resection surgeries of cystic craniopharyngioma. However, due to persistent symptoms, he had Ommaya reservoir shunt inserted for regular aspiration. Despite regular aspiration, his symptoms worsen. He was unsuitable for radiotherapy thus was considered for intra-cystic irradiation with radioisotope. Prior to the therapy, he had pre-therapy assessment with Tc-99 m MAA. He subsequently received Ytrrium-90 citrate colloid of 300 Gy radiation dose to the inner surface of the tumour which complicated with post therapy inflammatory reaction. This first local experience highlights the role of radioisotope as the valuable minimally invasive adjuvant therapy in treating a patient with refractory cystic craniopharyngioma. Further follow-up is necessary to assess the outcome and possible late complications.
Radionuclide gastric emptying scintigraphy in patients with suspected gastroparesis in Hospital Kuala Lumpur: A preliminary experience

Rohani MFM, Zanial AZ, Nagaratnam P, Gew LT, Mutalib NAA, Hassan SZA

Med J Malaysia, 2021 07;76(4):518-525.
PMID: 34305113

INTRODUCTION: Gastroparesis is a medical condition that can cause significant morbidity. Its prevalence in Malaysia is not known and is often under diagnosed. The gold standard in the assessment of gastroparesis is radionuclide gastric emptying scintigraphy (GES). The aim of this study was to evaluate the added benefit of performing GES in patients with suspected gastroparesis in Hospital Kuala Lumpur (HKL).
METHODS: The clinical data and scintigraphic findings of consecutive patients referred to the Department of Nuclear Medicine, HKL for GES from July 2020 to December 2020 were retrospectively reviewed.
RESULTS: Thirteen patients underwent the study (6 males and 7 females) with a mean age of 47.9 years (age range of 25 to 72 years). The majority of patients (n=11) were diagnosed with either type I or type II diabetes mellitus. Ten patients reported abnormal scan findings with only 3 patients had normal GES findings. Scintigraphic findings from our patients, association of symptoms with abnormal GES as well as the challenges in implementing GES in Malaysia is discussed.
CONCLUSION: GES provides valuable information to the referring physician in the diagnosis and management of patients with gastric motility disorders. However, its use is limited because of limited availability, cost restriction, lack of familiarity among clinicians, and lack of understanding of the test. Further effort is thus needed to enhance the availability and usage of GES in Malaysia.

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