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Fulltext Incremental Value of Single-photon Emission Computed Tomography-computed Tomography for Characterization of Skeletal Lesions in Breast Cancer Patients

Mahaletchumy T, AbAziz A

World J Nucl Med, 2017 Oct-Dec;16(4):303-310.
PMID: 29033679 DOI: 10.4103/1450-1147.215496

The incremental value of single-photon emission computed tomography-computed tomography (SPECT-CT) over planar bone scintigraphy and SPECT in detecting skeletal lesions in breast cancer patients and its effect on patient management is assessed in this study. This is a prospective study which was conducted over 1-year duration. Whole-body planar scintigraphy, SPECT, and SPECT-CT were performed in 85 breast cancer patients with total of 128 lesions. Correlative imaging and clinical follow-up was used as the reference standard. McNemar's multistep analysis was performed for each patient and each lesion. On patient-wise analysis, 47 patients had equivocal diagnosis on planar bone scintigraphy, 28 on SPECT, and eight on SPECT-CT. On lesion-wise analysis, there were 72 equivocal lesions on planar bone scintigraphy, 48 on SPECT, and 15 on SPECT-CT. Overall, SPECT-CT resulted in a significant reduction in the proportion of equivocal diagnosis on both patient-wise (P < 0.004) and lesion-wise basis (P < 0.004), irrespective of the skeletal region involved. The sensitivity on a per-patient basis was 43%, 58%, and 78% for planar bone scintigraphy, SPECT, and SPECT-CT, respectively. Similarly, the specificity was 85%, 92%, and 94% for planar bone scintigraphy, SPECT, and SPECT-CT, respectively. Patient management was correctly altered in 32% of the patients based on SPECT-CT interpretation. Our data suggest that adding SPECT-CT to whole-body imaging significantly improves sensitivity and specificity in diagnosing bone metastases and significantly reduces the proportion of equivocal diagnosis in all regions of the skeleton. The most important outcome is derived from the accurate alteration in patient management clinically by down- and up-staging of patients and a more precise identification of metastatic extent.
Fulltext Skin Manifestation of Unsuspecting Prostate Cancer Detected by 18F-FDG PET/CT Performed To Assess Underlying Multiple Myeloma

AbAziz A, Mahaletchumy T, Chung JK

Nucl Med Mol Imaging, 2013 Dec;47(4):285-8.
PMID: 24900127 DOI: 10.1007/s13139-013-0233-5

BACKGROUND: Skin metastases from either prostate adenocarcinoma or multiple myeloma rarely occur. We report the case of a 73-year-old man with multiple myeloma who presented with multiple subcutaneous nodules 3 years after his initial diagnosis.
METHODS: Fluorine-18 fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) imaging was suggestive of a concomitant second primary from the prostate.
RESULTS: This case highlights not only a rare initial manifestation of prostate cancer, but also the role of 18F-FDG-PET/CT in detecting a clinically unsuspected second malignancy.
CONCLUSION: It potentially corroborates the possible association of both diseases, as has been reported before.
Fulltext Utility of alpha-blockade in a hypotensive pheochromocytoma patient with myocardial infarction

Wahab NA, Zainudin S, AbAziz A, Kamaruddin NA

Med Princ Pract, 2015;24(1):96-8.
PMID: 25428406 DOI: 10.1159/000369021

OBJECTIVE: The aim of this case study is to emphasize the importance of α-blockade in managing a rare complication of an untreated pheochromocytoma.
CLINICAL PRESENTATION AND INTERVENTION: A 41-year-old man with previous bilateral pheochromocytoma presented with chest pain. He was suffering from cardiac failure and persistent hypotension requiring an inotrope. Cardiac markers, an electrocardiogram and an echocardiogram confirmed acute myocardial infarct with poor ejection fraction and global hypokinesia. An (18)F-fluorodeoxyglucose PET/CT scan showed progressive left suprarenal and organ of Zuckerkandl pheochromocytomas. Blood pressure stabilisation proved challenging but was achieved by titrating an incremental dose of α-blocker against a tapering inotropic dose.
CONCLUSION: This case showed the efficacy of an α-blocker despite persistent hypotension in a patient with pheochromocytoma-induced cardiomyopathy.
Fulltext Lymphoscintigraphy SPECT/CT: Instrumental Navigator in Repair of Thoracic Duct Injury

AbAziz A, M Yusop S, Mohd Tahir MF, Lim YC, Gallowitsch HJ

Nucl Med Mol Imaging, 2016 Jun;50(2):173-4.
PMID: 27275371 DOI: 10.1007/s13139-015-0349-x
Fulltext Dermatomyositis masquerading musculoskeletal tuberculosis

Rajalingham S, Said MS, Shaharir SS, AbAziz A, Periyasamy P, Anshar FM

BMJ Case Rep, 2011;2011.
PMID: 22675098 DOI: 10.1136/bcr.08.2011.4675

Dermatomyositis is a rare rheumatic disease which predominantly affects the muscles and skin requiring a protracted course of immunosuppressants which may predispose the patients to opportunistic infections. A 49-year-old lady was diagnosed to have dermatomyositis in August 2010 based on history, significantly raised creatine kinase level and muscle biopsy findings. She had recurrent admissions due to fever, myalgia and muscle weakness. She had spiking temperature despite high dose steroids, broad-spectrum antibiotics and antifungal agents. This prompted extensive investigation which leads us to the additional diagnosis of disseminated tuberculosis involving the lungs, muscles and bones. This case demonstrates the challenge in controlling the disease activity of dermatomyositis with immunosuppressants in the setting of disseminated tuberculosis.
Fulltext Renal doppler assessment in differentiating obstructive from non-obstructive hydronephrosis in children

Nadzri M, Hing EY, Hamzaini AH, Faizah MZ, AbAziz A, Kanaheswari Y, et al.

Med J Malaysia, 2015 Dec;70(6):346-50.
PMID: 26988207 MyJurnal

BACKGROUND: to determine the usefulness of Doppler ultrasound measurement of resistive index (RI) in differentiating obstructive from non-obstructive hydronephrosis in children.
METHODS: From August 2011 to November 2012, renal Doppler assessments of the intra-renal renal arteries were performed on 16 children (19 kidneys) with congenital hydronephrosis. the independent t-test was used to assess for significant difference in RI values between those with obstructive hydronephrosis (6 kidneys) and those with non-obstructive hydronephrosis (13 kidneys) as determined by dynamic renal scintigraphy. the assessor was blinded to the clinical findings and scintigraphy results.
RESULTS: RI was significantly different between obstructive and non-obstructive hydronephrosis. Obstructive hydronephrosis returned higher RI values, with mean RI of 0.78. Mean RI in non-obstructive hydronephrosis was 0.70, and the difference was significant (p <0.05). the sensitivity and specificity of Doppler ultrasound were 100% and 53% respectively.
CONCLUSION: Doppler ultrasound measurement of resistive index is useful in differentiating obstructive from nonobstructive hydronephrosis and provides an alternative non-ionizing investigation.
Study site: Universiti Kebangsaan Malaysia
Medical Centre, Kuala Lumpur, Malaysia
Fulltext Multi-Target Approach to Metastatic Adrenal Cell Carcinoma

Wahab NA, Zainudin S, AbAziz A, Mustafa N, Sukor N, Kamaruddin NA

Arch Iran Med, 2016 Sep;19(9):671-3.
PMID: 27631184 DOI: 0161909/AIM.0012

Adrenal cell carcinoma is a rare tumor and more than 70% of patients present with advanced stages. Adrenal cell carcinoma is an aggressive tumor with a poor prognosis. Surgical intervention is the gold standard treatment and mitotane is the only drug approved for the treatment of adrenal cell carcinoma. Until recently in 2012, the etoposide, doxorubicin, cisplatin plus mitotane are approved as first-line therapy based on response rate and progression-free survival. This case illustrates a case of advanced adrenal cell carcinoma in a young girl who presented with huge adrenal mass with inferior vena cava thrombosis and pulmonary embolism. Multi-approach of therapy was used to control the tumor size and metastasis. Therefore, it may prolong her survival rate for up to 5 years and 4 months.