1.Large "Growing" Adrenal Mass with an Unexpected Histology
Ling Hui Kiu ; Ee Wen Loh ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):24-
Introduction:
Large, rapidly enlarging adrenal masses typically mandate
surgical intervention given the high probability of adrenocortical carcinoma (ACC). However, benign processes can mimic these aggressive growth kinetics, creating a
diagnostic challenge for clinicians.
Case:
A 74-year-old male with hypertension, atrial fibrillation on
rivaroxaban, and prostate cancer was referred for evaluation
of a right adrenal incidentaloma detected on computed
tomography imaging performed for prostate cancer
staging. The well-defined mass measured 8.9 × 7.8 × 7.5 cm
(AP × W × CC) with areas of calcification. Mean attenuation
was +40 Hounsfield Unit, with no significant washout.
Biochemical evaluation confirmed a non-functioning
lesion (24-hour urine metanephrines 756 mcg/24 hours
[N 246–753 mcg/24 hours]; serum cortisol 62 nmol/L post
overnight dexamethasone suppression test). The patient was otherwise asymptomatic and declined surgical intervention. Repeat imaging 4 months later demonstrated
interval enlargement of the mass to 9.8 × 8.8 × 10.7 cm. Due
to this rapid growth, which was highly concerning for ACC,
the patient underwent laparoscopic right adrenalectomy.
Histopathological examination unexpectedly revealed
an adrenal hematoma without evidence of an underlying
tumor or malignancy.
This case illustrates the difficulty in differentiating
aggressive cortical tumors from atypical hemorrhagic
events. Larger series on adrenal hemorrhage reported
trauma and procedural complications as the leading causes,
with a median size of 3–4 cm. Idiopathic large adrenal
hematomas presenting as rapidly expanding “pseudotumors” are exceptionally rare, with fewer than 20 cases
reported in which surgical resection was performed due to
high preoperative suspicion of malignancy. Additionally,
adrenal hemorrhage attributed to anticoagulant therapy
often occurs bilaterally. Unilateral lesion, especially when
large, can pose a diagnostic challenge as highlighted in
this case.
Conclusion
In patients on anticoagulation, rapid interval growth of
an adrenal mass does not always equate to malignancy.
Recognizing this mimicry in the era of widespread Direct
Oral Anticoagulant use is essential for refining treatment
decision regarding surgical intervention, as most cases exhibited a self-limiting process with spontaneous resolution.
2.Clinical Utility of Modified Asian FINDRISC and Random Capillary Blood Glucose for the Detection of Dysglycemia in the Adult Population
Jie En Tan ; Nor Shaffinaz Yusoff Azmi Merican ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):34-
Introduction:
Type 2 diabetes mellitus is a major healthcare problem
worldwide, yet high percentage of patients are undiagnosed. There is a dire need for effective screening strategies.
We examine the use of modified Asian FINDRISC
(M-FINDRISC) and POCT random capillary blood glucose
(rCBG) for the detection of dysglycemia
Methodology:
This cross-sectional, observational study included 151
adults aged ≥30 years without a prior history of diabetes
in healthcare and community settings. Hemoglobin A1c
of ≥6.3% was used for the diagnosis of diabetes, and 5.7–
6.2% for prediabetes. Areas under the receiver operating
curve (ROC-AUC) for M-FINDRISC were analyzed.
The sensitivity and specificity of the combined use of
M-FINDRISC and rCBG for the detection of dysglycemia
were evaluated.
Results:
The mean age of the participants was 44.6 ± 11.0 years.
They had high body mass index (27.8 ± 4.9 kg/m²). Most
were sedentary (only 25.2% reported physical activities
of ≥30 min/day). A total of 52.3% had first-degree
relatives with diabetes, but less than 12% were taking
antihypertensive medication. Out of 151 participants, 3.3%
(n = 5) were diagnosed with diabetes mellitus and 37.7%
(n = 57) with prediabetes, giving an overall prevalence of
41.1% for dysglycemia. The mean age of participants with
dysglycemia was significantly older (47.9 vs. 42.3 years,
p-value 0.002). Other parameters were not statistically
different for the two groups. Mean M-FINDRISC score was
9.7 ± 3.9 in the normal and 10.8 ± 4.0 in the dysglycemic
group, while rCBG was 6.4 ± 1.1 mmol/L and 7.1 ± 3.1
mmol/L, respectively. ROC-AUC of M-FINDRISC for
dysglycemia was 0.561. A combined screening strategy
(M-FINDRISC score ≥7.5 and CBG ≥7.8 mmol/L) yielded
high specificity (89.9%) but low sensitivity (17.7%) for
dysglycemia.
Conclusion
While the combined screening strategy utilizing
M-FINDRISC and POCT random CBG improves specificity, M-FINDRISC showed limited predictive value for
dysglycemia in this specific cohort, making it a less ideal
tool for screening.
3.Hidden Burden of Diabetes Risk Among Healthcare Workers in a Tertiary Hospital
Hui Soon Lim ; Ee Wen Loh ; Sing Yee Sim ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):40-
Introduction:
The increasing prevalence of diabetes represents a
significant global health challenge. Modifiable risk factors,
including physical inactivity, unhealthy dietary habits, and obesity contribute substantially to this rising burden.
In conjunction with the 2025 World Diabetes Day (WDD)
campaign focusing on “diabetes and the workplace,” we
assessed diabetes risk among healthcare workers in our
hospital using the Modified Asian Finnish Diabetes Risk
Score (ModAsian FINDRISC).
Methodology:
Healthcare workers from various departments were invited
to participate in the hospital WDD celebration. A total of
286 attendees underwent anthropometric measurements
and completed the ModAsian FINDSRIC questionnaire.
Descriptive statistics were used to summarize the
prevalence of risk factors and overall diabetes risk.
Results:
The participants included doctors, nurses, allied healthcare
professionals, as well as hospital support and administrative
staff. The majority of participants (74.8%) were aged below
45 years. 39.2% were overweight while 30.8% were obese.
One-third (37.4%) had increased waist circumference
(WC) (≥90 cm for men, ≥80 cm for women). Additionally,
20% of respondents reported being on antihypertensive
medication, and 23.8% had previously recorded high blood
glucose. A family history of diabetes mellitus (DM) was
reported by 62.6% of respondents. Additionally, about onethird were sedentary with less than 30 minutes of daily
exercise or physical activity, another one-third did not
consume fruits or vegetables on a daily basis. The median
ModAsian FINDRISC score was 8, with approximately
30% of them classified as having moderate to very high
risk of developing DM (moderate: 17.5%; high: 10.8%; very
high: 2.8%).
Conclusion
These results revealed high metabolic risk in healthcare
workers and highlight the need for targeted workplace
health promotion strategies to reduce the risk of developing
diabetes.
Tertiary Care Centers
;
Health Personnel
;
Diabetes Mellitus
4.Individualizing Therapy With Repaglinide: A Single-Centre Experience
Ioanna Ting Yung Sim ; Florence Hui Sieng Tan ; Pei Lin Chan ; Ee Wen Loh
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):55-
Introduction:
Repaglinide, a meglitinide analogue, has a rapid onset
and short duration of action. It offers prandial glucose
control while reducing hypoglycemia risk compared to
sulfonylureas. We describe its use in our special cohorts
of diabetic patients where repaglinide was prescribed to
reduce hypoglycemia in vulnerable patients or to optimize
glycemic control through pharmacotherapy intensification
or deintensification.
Cases:
Cohort A comprised 12 elderly patients with multiple
comorbidities (mean age: 70.3 years; mean DM duration:
18.3 years) characterized by high glucose variability and
problematic hypoglycemia. In seven patients, low-dose
gliclazide was replaced with repaglinide with reduction
in hypoglycemic episodes. One patient on low-dose premixed insulin was successfully switched to preprandial
repaglinide. Two patients on basal insulin were able to
reduce their insulin requirements and stabilize their glucose
levels. A younger patient with autonomic dysfunction had
hypoglycemia while on insulin glulisine, while its omission
led to severe hyperglycemia. Substituting glulisine with
repaglinide resolved the glucose variability. Repaglinide
effectively reduced hypoglycemic episodes while maintaining glycemic stability, with a mean hemoglobin A1c
(HbA1c) reduction of 0.36% over 3–6 months.
Cohort B consisted of six younger patients (mean age: 35.3
years) with focus on optimizing HbA1c and improving
treatment adherence. Two patients on basal-bolus regimes
success-fully transitioned off bolus insulin to repaglinide,
significantly improving compliance. One patient on
basal insulin was successfully transitioned to an all-oral
regimen. Three patients on existing oral hypoglycemic
agents were started on repaglinide to close the glycemic
gap. Cohort B achieved a robust mean HbA1c reduction of
2.1% within 3–6 months.
Conclusion
Repaglinide remains an important armamentarium in
personalized diabetes management. Its pharmacokinetics
and flexible dosing allow intensification of glycemic
control while minimizing the risk of hypoglycemia. It also
offers a viable strategy for selected patients struggling
with complex insulin regime.
Repaglinide
5.Clinical Use of Denosumab for Refractory Hypercalcemia: A Retrospective Case Series
Mohammad Amirul Shahril ; Florence Hui Sieng Tan ; Ee Wen Loh ; Pei Lin Chan ; Sing Yee Sim
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):71-
Introduction:
Severe hypercalcemia is most commonly caused by primary
hyperparathyroidism (PHPT) and malignancy. While
standard therapies are effective in most cases, a subset of
patients have persistent or refractory hypercalcemia. We
present a retrospective case series detailing the clinical
characteristics, biochemistry, and outcomes of patients
treated with denosumab for hypercalcemia.
Cases:
Seven patients with severe hypercalcemia were identified,
comprising five with PHPT and two with malignancyassociated hypercalcemia. The mean age was 70.4 years
(range 55–86), with 71% female (n = 5) and 29% male (n
= 2). Baseline corrected calcium ranged from 2.92 to 4.59
mmol/L, with a mean of 3.26 mmol/L. In the PHPT cohort,
parathyroid hormone (PTH) levels were significantly
elevated (16.7–168 pmol/L), while malignancy patients had
suppressed PTH (0.6 and 0.9 pmol/L).
Prior to denosumab, 4/7 patients (57%) received bisphosphonates, 3/7 (43%) received calcitonin, and 1/7 (14%) was
treated with cinacalcet. Denosumab resulted in a mean
reduction in corrected calcium of 0.22 mmol/L from 3.26
to 3.03 mmol/L.
Biochemical response was observed in 5/7 patients (71%).
Of these, 3 patients (43%) achieved normocalcemia,
while 2 patients (29%) demonstrated a partial response.
The remaining 2/7 patients (29%) showed no significant
improvement in calcium levels. Among responders, the
mean time to calcium reduction to <3.0 mmol/L was 27 days
(range 7–47). Repeat dosing was required in the majority
of patients, with a mean of 1.7 doses per patient (range
1–4), indicating variability in both onset and durability
of response. Among patients with PHPT, four underwent
parathyroidectomy, and one declined surgery. Both patients
with malignancy were managed nonsurgically.
Conclusion
Denosumab achieved normocalcemia in 43% of patients,
with additional partial responses. Its effects were variable,
with delayed response and frequent need for repeat dosing,
supporting its role as an adjunctive or bridging therapy
rather than as a definitive treatment.
Denosumab
;
Hypercalcemia
;
Retrospective Studies
6.Fatal Hypercalcemic Crisis Secondary to Primary Hyperparathyroidism: A Case Report
Pey Hui See ; Ee Wen Loh ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):75-
Introduction:
Hypercalcemic crisis, a decompensated state characterized
by multiorgan dysfunction and a corrected serum calcium
(CCa) level typically >3.5 mmol/L, is a rare but lifethreatening endocrine emergency that requires prompt
recognition and aggressive multimodal management. We
report a fatal case of hypercalcemic crisis secondary to
primary hyperparathyroidism, which was refractory to
multiple lines of medical therapy.
Case:
A 55-year-old female with diabetes mellitus, hypertension,
and chronic kidney disease (creatinine 159 umol/L; estimated glomerular filtration rate 33 mL/min) presented with
3 days of confusion, profound fatigue, and constipation,
preceded by a 1-month history of polyuria and polydipsia.
Her Glasgow Coma Scale (GCS) was E4V3M5. Physical
examination was unremarkable, with no palpable neck
swelling. Significant laboratory findings included severe
hypercalcemia with markedly elevated serum intact
parathyroid hormone (iPTH) (CCa 4.49 mmol/L; phosphate
1.01 mmol/L; iPTH 60.1 pmol/L [N 1.6–6.0]; creatinine
149 umol/L). Saline diuresis was initiated together with
subcutaneous calcitonin, resulting in an initial biochemical
response, with CCa decreasing to a nadir of 3.61 mmol/L.
However, the CCa subsequently rebounded to 5.00 mmol/L.
Hemodialysis was performed, followed by administration
of subcutaneous denosumab 60 mg. Nonetheless, the CCa
decreased only modestly to 4.28 mmol/L. She became
increasingly drowsy, and her clinical course was further complicated by aspiration pneumonia and lung collapse,
leading to respiratory failure requiring intubation and
inotropic support. Despite intensive care, additional
sessions of hemodialysis and continuous renal replacement
therapy, her CCa remained persistently above 4.0 mmol/L,
peaking at 5.35 mmol/L. Due to her critical condition,
imaging for lesion localization could not be performed.
She eventually succumbed to her illness on day 10 of
admission, before definitive surgery could be undertaken.
Conclusion
This case highlights the potentially fatal course of
hypercalcemic crisis secondary to primary hyperparathyroidism. The reported mortality rate is high, at around
60%. Early recognition and intensive management,
including emergency parathyroidectomy in resistant cases,
have been shown to be crucial in improving outcomes.
Hyperparathyroidism, Primary
7.A Diagnostic Dilemma in Ectopic ACTH Syndrome: When Biochemistry and Imaging Conflict
Ioanna Ting Yung Sim ; Florence Hui Sieng Tan ; Sing Yee Sim ; Pei Lin Chan ; Ee Wen Loh
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):83-84
Introduction:
Ectopic ACTH secretion (EAS) is a rare cause of Cushing’s
syndrome, accounting for 5–15% of cases. Pulmonary
neuroendocrine tumors are the most frequent cause.
However, primary tumor localization remains a significant
diagnostic challenge, delaying effective treatment.
Case:
A 59-year-old female with diabetes mellitus presented
with refractory hypertension and hypokalemia. Initial
laboratory findings revealed a baseline cortisol of 1,164
nmol/L and morning adrenocorticotropic hormone
(ACTH) of 19.5 pmol/L (normal <10.2 pmol/L), with an
overnight dexamethasone suppression test cortisol of
624 nmol/L. Pituitary magnetic resonance imaging (MRI)
and computed tomography (CT) scans of the thorax,
abdomen, and pelvis were initially unremarkable. A PET
scan identified mild hypermetabolism in the left adrenal
gland and gastrointestinal tract, though colonoscopy
revealed only chronic colitis. An intravenous desmopressin
stimulation test demonstrated a 181% rise in ACTH and a
35% rise in cortisol, pointing toward pituitary Cushing’s.
However, repeat pituitary MRI remained normal.
A high-dose dexamethasone suppression test showed
approximately 34% cortisol suppression (cortisol 1,128
nmol/L to 745 nmol/L), suggesting ectopic Cushing’s
syndrome. Bilateral inferior petrosal sinus sampling
demonstrated a peak central-to-peripheral ACTH ratio of
1.8 on the right and 1.6 on the left, pointing toward ectopic
Cushing’s.
Localization with DOTATATE PET-CT identified a 7 × 9 ×
8 mm nodule in the right middle lobe. A wedge resection
was performed. Histopathology confirmed a typical
carcinoid tumor with clear resection margins. Immunohistochemistry revealed tumor cells positive for CK AE1/ AE3, synaptophysin, chromogranin, and INSM-1, with
weak positivity for ACTH. The latest 8 am cortisol was 117
nmol/L and ACTH 1.74 pmol/L, confirming biochemical
cure. Hypokalemia resolved, with improvement in her
metabolic profile.
Conclusion
This case highlights the diagnostic complexities of EAS,
particularly when initial imaging is inconclusive and
biochemical tests yield conflicting results. Timely, precise
localization of the causative tumor is crucial for successful
surgical intervention and to prevent severe complications
of hypercortisolism, thereby improving patient outcomes.
ACTH Syndrome, Ectopic
8.From Hypernatremia to Hyponatremia: Sequential Central AVP Deficiency (AVP-D) and Cerebral Salt Wasting (CSW) in Tuberculous Meningitis (TBM)
Chia Yin Por ; Ee Wen Loh ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):84-
Introduction:
Electrolyte imbalance is common in central nervous system
infections. Arginine vasopressin deficiency (AVP-D),
Cerebral Salt Wasting (CSW), and Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH) are important etiologies that can cause opposing extremes of serum
sodium, posing diagnostic and therapeutic challenges.
We report a rare case of transient central AVP-D followed
by CSW secondary to tuberculous meningitis (TBM).
Case:
An 18-year-old female presented with a 1-month history of
fever, reduced responsiveness, and visual hallucinations.
Her Glasgow Coma Scale was E4V1M4 with neck stiffness
and upper motor neuron signs. Initial investigations revealed
severe hyponatremia (119 mmol/L) and communicating
hydrocephalus with third ventricle ballooning on brain
imaging. Coupled with a positive tuberculosis contact,
anti-tuberculous therapy was initiated for probable TBM
alongside 3% saline correction prior to insertion of external
ventricular drain (EVD). Her condition deteriorated on day
5, requiring intubation for aspiration pneumonia. Repeated
imaging showed worsening hydrocephalus, necessitating
EVD revision. She subsequently developed polyuria (urine
output [UO] 150–300 mLs/hour), with biochemical findings
consistent with AVP-D (serum sodium 154 mmol/L; urine osmolality 96 mOsm/kg; urine sodium <20 mmol/L).
Intravenous desmopressin 1 mcg was administered, and
UO reduced to 30 mLs/hour. However, polyuria recurred
on Day 9, accompanied by tachycardia, hypotension, and
a rapid decline in serum sodium to 120 mmol/L. Diagnosis
of CSW was established (urine sodium 204 mmol/L; urine
osmolality 470 mOsm/kg). Oral fludrocortisone was
initiated and titrated to 0.4 mg daily to maintain serum
sodium >130 mmol/L. Due to persistent hydrocephalus,
right ventriculoperitoneal shunt was inserted on Day 22,
after which her UO gradually decreased, allowing tapering
of fludrocortisone. She remains on fludrocortisone 0.1 mg
daily with ongoing rehabilitation.
Conclusion
TBM can be complicated by SIADH, AVP-D, or CSW.
Concurrent AVP-D and CSW have not been reported.
This case highlights the dynamic electrolyte disturbances
in TBM which may lead to diagnostic confusion and
therapeutic error. Early recognition and tailored therapy,
alongside definitive management to reduce intracranial
pressure, are essential for optimal outcomes.
Hypernatremia
;
Hyponatremia
;
Tuberculosis, Meningeal
9.An unusual case of adrenocortical carcinoma with multiple facets
Jie En Tan ; Florence Hui Sieng Tan ; Yueh Chien Kuan ; Pei Lin Chan ; Yusri Yusuf
Journal of the ASEAN Federation of Endocrine Societies 2024;39(2):92-96
Adrenocortical carcinoma (ACC) is a rare malignant tumour originating from the adrenal cortex. Half of the cases are functional, with ACTH independent autonomous cortisol production being the most common. It is rare for ACC to present with markedly elevated metanephrine levels which is a typical characteristic of pheochromocytoma. We report a case of a large functioning adrenal tumour with overlapping biochemistry features of ACC and pheochromocytoma. Biopsy confirmed the histopathological diagnosis of metastatic ACC.
Adrenocortical Carcinoma
;
Pheochromocytoma
10.Effects of Varicocele Repair on Sperm DNA Fragmentation and Seminal Malondialdehyde Levels in Infertile Men with Clinical Varicocele:A Systematic Review and Meta-Analysis
Rossella CANNARELLA ; Rupin SHAH ; Ramadan SALEH ; Florence BOITRELLE ; Taha Abo-Almagd Abdel-Meguid HAMODA ; Rajender SINGH ; Gianmaria SALVIO ; Tuncay TOPRAK ; Marco FALCONE ; Murat GUL ; Fotios DIMITRIADIS ; Amarnath RAMBHATLA ; Giorgio I. RUSSO ; Edmund KO ; Armand ZINI ; Parviz KAVOUSSI ; Nguyen Ho Vinh PHUOC ; Hussein KANDIL ; Ramy Abou GHAYDA ; Ponco BIROWO ; Nazim GHERABI ; Erman CEYHAN ; Jie DONG ; Vineet MALHOTRA ; Damayanthi DURAIRAJANAYAGAM ; Bircan KOLBASI ; Fahmi BAHAR ; Gokhan CALIK ; Selahittin ÇAYAN ; Germar-Michael PINGGERA ; Aldo E. CALOGERO ; Osvaldo RAJMIL ; Taymour MOSTAFA ; Widi ATMOKO ; Ahmed M. HARRAZ ; Tan V. LE ; Jean de la ROSETTE ; Lukman HAKIM ; Edoardo PESCATORI ; Oleg SERGEYEV ; Ayman RASHED ; Pallavi SAINI ; Ashok AGARWAL
The World Journal of Men's Health 2024;42(2):321-337
Purpose:
Varicoceles can be a source of elevated seminal oxidative stress (OS) and sperm DNA fragmentation (SDF). However, it remains unclear whether varicocele repair (VR) could reduce these parameters. This systematic review and meta-analysis (SRMA) aims to investigate the impact of VR on SDF and seminal malondialdehyde (MDA).
Materials and Methods:
A literature search was performed in Scopus, PubMed, Ovid, Embase, and Cochrane databases. This SRMA included randomized controlled trials and observational studies reporting the pre- and postoperative levels of SDF and seminal OS in infertile men with clinical varicocele that underwent VR. Subgroup analyses included techniques of VR and SDF testing. The effect size was expressed as standardized mean difference (SMD).
Results:
Out of 1,632 abstracts assessed for eligibility, 29 studies with 1,491 infertile men were included. The analysis showed a significant reduction in SDF after VR, compared to preoperative values (SMD −1.125, 95% confidence interval [CI] −1.410, −0.840; p<0.0001) with high inter-study heterogeneity (I2=90.965%). Reduction in SDF was evident with microsurgical technique and non-microsurgical inguinal approaches (SMD −1.014, 95% CI −1.263, −0.765; p<0.0001, and SMD −1.495, 95% CI −2.116, −0.873; p<0.0001), respectively. Reduction in SDF was significant irrespective of testing was done by sperm chromatin dispersion (SMD −2.197, 95% CI −3.187, −1.207; p<0.0001), sperm chromatin structure assay (SMD −0.857, 95% CI −1.156, −0.559; p<0.0001) or TUNEL (SMD −1.599, 95% CI −2.478, −0.719; p<0.0001). A significant decrease in seminal MDA levels was observed following VR (SMD −2.450, 95% CI −3.903 to −0.997, p=0.001) with high inter-study heterogeneity (I2=93.7%).
Conclusions
Using pre- and post-intervention data, this SRMA indicates a significant reduction in SDF and seminal MDA levels in infertile men with clinical varicocele treated with VR. These findings may have important implications for the future management of this selected group of infertile patients.


Result Analysis
Print
Save
E-mail