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Prevalence and Analysis of Risk Factors for RAI-Refractory Thyroid Cancer Patients: A 5-Year Retrospective Analysis from a Single Institution in Indonesia Putri, Syifa Azizah; Monty Priosodewo Soemitro; Basuki Hidayat; Kharisma Perdani Kusumahstuti
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 8 No. 11 (2024): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v8i11.1116

Background: Radioactive iodine (RAI) therapy is a cornerstone in the management of differentiated thyroid cancer (DTC). However, a subset of patients develops RAI-refractory disease, characterized by the inability to concentrate radioiodine, leading to limited treatment options and a poorer prognosis. This study aimed to investigate the prevalence and identify potential risk factors associated with RAI-refractory DTC in an Indonesian population. Methods: A retrospective analysis was conducted on patients diagnosed with DTC and treated with RAI at a single tertiary care center in Indonesia between 2019 and 2023. Data on demographics, clinical characteristics, tumor features, and treatment outcomes were collected. RAI-refractoriness was defined as the absence of iodine uptake on diagnostic whole-body scans after cumulative RAI activity of 600 mCi or more. Bivariate and multivariate analyses were performed to identify risk factors for RAI-refractoriness. Results: A total of 194 patients with DTC were included in the study. The prevalence of RAI-refractoriness was 90%. The median age at diagnosis was 55 years (range 18-82), and 72% were female. Papillary thyroid carcinoma was the most common histological subtype (92%). In bivariate analysis, older age at diagnosis (p=0.02), male gender (p=0.04), and the presence of distant metastases at diagnosis (p<0.001) were significantly associated with RAI-refractoriness. In multivariate analysis, only the presence of distant metastases remained an independent predictor of RAI-refractoriness (odds ratio 3.8, 95% confidence interval 1.5-9.2, p=0.003). Conclusion: RAI-refractoriness is a significant clinical challenge in the management of DTC, with a high prevalence observed in this Indonesian cohort. The presence of distant metastases at diagnosis emerged as a strong predictor of RAI-refractoriness. Further research is needed to elucidate the underlying mechanisms of RAI-refractoriness and develop novel therapeutic strategies for this patient population.

Primary Malignant Melanoma of the Hard Palate: A Rare Case Report Putri, Syifa Azizah; Kiki Ahmad Rizki
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 8 No. 11 (2024): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v8i11.1117

Background: Primary malignant melanoma of the oral cavity is an uncommon and aggressive malignancy with a poor prognosis. The hard palate is a rare site for primary melanoma, and early diagnosis is often challenging due to its asymptomatic nature in the initial stages. Case presentation: We present the case of a 58-year-old female who presented with a pigmented lesion on the right hard palate and a neck mass. The lesion had been present for a year and had gradually increased in size. The neck mass had appeared three months prior and was associated with pain. Imaging and biopsy confirmed the diagnosis of malignant melanoma with cervical lymph node metastasis. The patient underwent wide excision with right hemimaxillectomy and modified radical neck dissection type II, followed by planned postoperative radiation therapy. Conclusion: This case highlights the importance of considering melanoma in the differential diagnosis of pigmented oral lesions. Early diagnosis and aggressive treatment are crucial for improving outcomes in this rare but aggressive malignancy. The use of adjuvant therapies, such as radiation and targeted therapy, may be beneficial in select cases.

Metastatic Medullary Thyroid Carcinoma Mimicking a Primary Soft Tissue Sarcoma of the Shoulder: A Case Report Putri, Syifa Azizah; Kiki Akhmad Rizki; Rupita Endangena Sitanggang
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 1 (2025): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i1.1495

Background: Medullary thyroid carcinoma (MTC) is a rare neuroendocrine malignancy accounting for 1-5% of thyroid cancers. While often presenting with cervical lymphadenopathy, distant metastasis to bone and soft tissue mimicking a primary sarcoma is exceptionally rare. This report details a case of MTC where the primary diagnostic challenge was a massive, destructive shoulder mass. Case presentation: A 58-year-old woman presented with a disabling, 20 cm mass in her left shoulder, progressively enlarging over two years. The patient also noted a 30-year history of a stable, asymptomatic neck lump. Magnetic Resonance Imaging (MRI) revealed a large, hypervascular, destructive mass obliterating the scapula and invading surrounding musculature, with a radiological differential diagnosis of a primary soft tissue sarcoma. Laboratory investigation, however, revealed a massively elevated serum calcitonin (>2000 pg/mL) and carcinoembryonic antigen (CEA) (180 ng/mL). A CT-guided core biopsy of the shoulder mass, initially suspected to be a sarcoma, was negative for all sarcoma markers. Instead, it was strongly positive for neuroendocrine (Synaptophysin, Chromogranin A) and thyroid-specific (TTF-1, PAX-8) markers, as well as definitive MTC markers (Calcitonin, CEA). This confirmed the diagnosis of metastatic MTC. Staging was completed as pT3a pN1b M1. The patient underwent total thyroidectomy with bilateral central and left modified radical neck dissection, followed by planned palliative resection of the shoulder metastasis and systemic therapy with a selective RET inhibitor. Conclusion: This case highlights a critical diagnostic pitfall. Metastatic MTC can present as a massive soft tissue neoplasm mimicking a primary sarcoma. In such cases, a systematic diagnostic approach combining serum biomarkers (Calcitonin, CEA) with a comprehensive immunohistochemical panel is essential to establish the correct diagnosis and initiate appropriate, life-extending targeted therapy.

Prevalence and Analysis of Risk Factors for RAI-Refractory Thyroid Cancer Patients: A 5-Year Retrospective Analysis from a Single Institution in Indonesia Putri, Syifa Azizah; Monty Priosodewo Soemitro; Basuki Hidayat; Kharisma Perdani Kusumahstuti
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 8 No. 11 (2024): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v8i11.1116

Background: Radioactive iodine (RAI) therapy is a cornerstone in the management of differentiated thyroid cancer (DTC). However, a subset of patients develops RAI-refractory disease, characterized by the inability to concentrate radioiodine, leading to limited treatment options and a poorer prognosis. This study aimed to investigate the prevalence and identify potential risk factors associated with RAI-refractory DTC in an Indonesian population. Methods: A retrospective analysis was conducted on patients diagnosed with DTC and treated with RAI at a single tertiary care center in Indonesia between 2019 and 2023. Data on demographics, clinical characteristics, tumor features, and treatment outcomes were collected. RAI-refractoriness was defined as the absence of iodine uptake on diagnostic whole-body scans after cumulative RAI activity of 600 mCi or more. Bivariate and multivariate analyses were performed to identify risk factors for RAI-refractoriness. Results: A total of 194 patients with DTC were included in the study. The prevalence of RAI-refractoriness was 90%. The median age at diagnosis was 55 years (range 18-82), and 72% were female. Papillary thyroid carcinoma was the most common histological subtype (92%). In bivariate analysis, older age at diagnosis (p=0.02), male gender (p=0.04), and the presence of distant metastases at diagnosis (p<0.001) were significantly associated with RAI-refractoriness. In multivariate analysis, only the presence of distant metastases remained an independent predictor of RAI-refractoriness (odds ratio 3.8, 95% confidence interval 1.5-9.2, p=0.003). Conclusion: RAI-refractoriness is a significant clinical challenge in the management of DTC, with a high prevalence observed in this Indonesian cohort. The presence of distant metastases at diagnosis emerged as a strong predictor of RAI-refractoriness. Further research is needed to elucidate the underlying mechanisms of RAI-refractoriness and develop novel therapeutic strategies for this patient population.

Primary Malignant Melanoma of the Hard Palate: A Rare Case Report Putri, Syifa Azizah; Kiki Ahmad Rizki
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 8 No. 11 (2024): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v8i11.1117

Background: Primary malignant melanoma of the oral cavity is an uncommon and aggressive malignancy with a poor prognosis. The hard palate is a rare site for primary melanoma, and early diagnosis is often challenging due to its asymptomatic nature in the initial stages. Case presentation: We present the case of a 58-year-old female who presented with a pigmented lesion on the right hard palate and a neck mass. The lesion had been present for a year and had gradually increased in size. The neck mass had appeared three months prior and was associated with pain. Imaging and biopsy confirmed the diagnosis of malignant melanoma with cervical lymph node metastasis. The patient underwent wide excision with right hemimaxillectomy and modified radical neck dissection type II, followed by planned postoperative radiation therapy. Conclusion: This case highlights the importance of considering melanoma in the differential diagnosis of pigmented oral lesions. Early diagnosis and aggressive treatment are crucial for improving outcomes in this rare but aggressive malignancy. The use of adjuvant therapies, such as radiation and targeted therapy, may be beneficial in select cases.

Metastatic Medullary Thyroid Carcinoma Mimicking a Primary Soft Tissue Sarcoma of the Shoulder: A Case Report Putri, Syifa Azizah; Kiki Akhmad Rizki; Rupita Endangena Sitanggang
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 1 (2025): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i1.1495

Background: Medullary thyroid carcinoma (MTC) is a rare neuroendocrine malignancy accounting for 1-5% of thyroid cancers. While often presenting with cervical lymphadenopathy, distant metastasis to bone and soft tissue mimicking a primary sarcoma is exceptionally rare. This report details a case of MTC where the primary diagnostic challenge was a massive, destructive shoulder mass. Case presentation: A 58-year-old woman presented with a disabling, 20 cm mass in her left shoulder, progressively enlarging over two years. The patient also noted a 30-year history of a stable, asymptomatic neck lump. Magnetic Resonance Imaging (MRI) revealed a large, hypervascular, destructive mass obliterating the scapula and invading surrounding musculature, with a radiological differential diagnosis of a primary soft tissue sarcoma. Laboratory investigation, however, revealed a massively elevated serum calcitonin (>2000 pg/mL) and carcinoembryonic antigen (CEA) (180 ng/mL). A CT-guided core biopsy of the shoulder mass, initially suspected to be a sarcoma, was negative for all sarcoma markers. Instead, it was strongly positive for neuroendocrine (Synaptophysin, Chromogranin A) and thyroid-specific (TTF-1, PAX-8) markers, as well as definitive MTC markers (Calcitonin, CEA). This confirmed the diagnosis of metastatic MTC. Staging was completed as pT3a pN1b M1. The patient underwent total thyroidectomy with bilateral central and left modified radical neck dissection, followed by planned palliative resection of the shoulder metastasis and systemic therapy with a selective RET inhibitor. Conclusion: This case highlights a critical diagnostic pitfall. Metastatic MTC can present as a massive soft tissue neoplasm mimicking a primary sarcoma. In such cases, a systematic diagnostic approach combining serum biomarkers (Calcitonin, CEA) with a comprehensive immunohistochemical panel is essential to establish the correct diagnosis and initiate appropriate, life-extending targeted therapy.

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