Endocrinology and Metabolism

Case Reports

A Case of Mediastinal parathyroid adenoma localized by technetium-99m sestamibi scanning.: Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Ki Ho Song, Sung Hee Lee, Won Hee Han, Hyung Sun Sohn; J Korean Endocr Soc. 1996;11(2):227-232. Published online November 7, 2019

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Abstract PDF: We present a patient with primary hyperparathyroidism in whom preoperative Tc-99m sestarnibi scanning cleary demonstrated mediastinal parathyroid adenoma. After resectian of tumor through median sternotomy, he was restored to the normocalcemia. This case suggests that Tc-99m sestamibi scanning may be a useful method in the preoperative localization of mediastinal parathyroid adenoma.

A Case of Primary Hyperparathyroidism Associated with Proximal Renal Tubular Acidosis and Postoperative Hungry Bone Syndrome.: Je Ho Han, Kun Ho Yoon, Bong Yun Cha, Ho Young Son, Kwang Woo Lee, Hae Ok Jung, Chang Sup Kim, Moo Il Kang, Chul Soo Cho, Ho Yun Kim, Sung Koo Kang; J Korean Endocr Soc. 1994;9(2):141-149. Published online November 6, 2019

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Abstract PDF: Primary hyperparathyroidism is a generalezed disorder of calcium, phosphorus and bone metabolism due to an increased secretion of parathyroid hormone. Single parathyroid adenoma is the most common cause of primary hyperparathyroidism. Because parathyroid hormone has been proposed as an important inhibitor of renal bicarbonate reabsorption of proximal tubule, proximal renal tubular acidosis is not rare in primary hyperparaphyroidism. After parathyroid resection, significant hypocalcemia and hypophosphatemia requiring prolonged medical management may develop, termed hungery bone syndrome. We experienced a case of primary hyperparathyroidism associated with proximal renal tubular acidosis, and severe hungry bone syndrome after resection of the adenoma of parathyroid gland.

A Case of Primary Hyperparathyroidism Caused by Solitary Parathyroid Adenoma That was Not Detected by Both Ultrasonography and Sestamibi Scan.: Kyong Yong Oh, Byoungho Choi, Yukyung Lee, Do Hwan Kim, Hyon Seung Yi, Kwang Jun Kim, Sihoon Lee, Sung Kil Lim; Endocrinol Metab. 2011;26(2):166-170. Published online June 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.2.166

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Thanks to advances in assay techniques and routine measurements in serum chemical analysis, primary hyperparathyroidism has become far more frequently detected, and the number of asymptomatic patients has substantially increased. In the majority of patients (85%), a solitary adenoma is the underlying cause of primary hyperparathyroidism. Surgical excision is the treatment of choice for most cases of primary hyperparathyroidism; this procedure has a relatively high success rate. In the past decade, improvements in preoperative imaging have played a major role in a targeted operative approach, which allows for minimally invasive surgery to be performed. The success of parathyroid surgery depends on the accurate preoperative localization of parathyroid adenoma. In this study, we report the case of a 54 year-old woman with primary hyperparathyroidism who presented with left buttock and leg pain. For localization of the parathyroid lesion, an ultrasonography and a 99mTc-sestamibi scan were initially performed, but these attempts failed to localize the lesion. We then carried out contrast-enhanced CT; thereafter, a single parathyroid adenoma was detected. Therefore, in patients with negative results on both ultrasonography and 99mTc-sestamibi scan, contrast-enhanced CT may prove helpful for preoperative parathyroid localization.

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Primary Hyperparathyroidism with Ectopic Parathyroid Adenoma Detected by Both99mTc-MIBI SPECT and Contrast-Enhanced Neck CT
Hye Jin Lim, Dong Geum Shin, Jun Bong Kim, Jin Taek Kim, Hyo Jeong Kim, Man Sil Park, Ho Jeong Lee
Korean Journal of Medicine.2012; 83(5): 641. CrossRef

Original Article

Association of the Parathyroid Adenoma Volume and the Biochemical Parameters in Primary Hyperparathyroidism.: Yul Hwang-Bo, Jung Hee Kim, Jee Hyun An, Eun Shil Hong, Jung Hun Ohn, Eun Ky Kim, Ah Reum Khang, Sun Wook Cho, Do Joon Park, Kyong Soo Park, Seong Yeon Kim, Bo Youn Cho, Chan Soo Shin; Endocrinol Metab. 2011;26(1):62-66. Published online March 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.1.62

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BACKGROUND
The objective of this study is to demonstrate the relationship between the volume of a parathyroid adenoma and the preoperative biochemical parameters in patients undergoing surgery for primary hyperparathyroidism. METHODS: The medical records of 68 patients who underwent a parathyroidectomy for a single parathyroid adenoma were retrospectively reviewed. The volume of the adenoma was estimated using its measured size and a mathematical formula. The correlation between the volume of the parathyroid adenoma and the preoperative laboratory data was assessed. RESULTS: There were no correlations between the estimated volume of the adenoma and the serum calcium, alkaline phosphatase and parathyroid hormone levels. However, the volume of the adenoma was associated with the preoperative level of serum phosphorus. After excluding 5 adenomas with cystic degeneration, a positive correlation was noted between the adenoma volume and the preoperative levels of alkaline phosphatase and parathyroid hormone. CONCLUSION: The preoperative serum levels of calcium, alkaline phosphatase and parathyroid hormone are of limited use to predict the volume of the parathyroid adenoma in patients with a single parathyroid adenoma. We suggest that the absence of a correlation between the volume of the adenoma and the biochemical parameters can be attributed to the cystic degeneration of the adenomas.

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Differentiating pathologic parathyroid glands from thyroid nodules on neck ultrasound: the PARATH-US cross-sectional study
Dolly Yazgi, Carine Richa, Sylvie Salenave, Peter Kamenicky, Amel Bourouina, Lorraine Clavier, Margot Dupeux, Jean-François Papon, Jacques Young, Philippe Chanson, Luigi Maione
The Lancet Regional Health - Europe.2023; 35: 100751. CrossRef
Primer hiperparatiroidide Tc99m-MIBI sintigrafi sonuçlarının biyokimyasal ve histopatolojik bulgular ile ilişkisi
Seda TURGUT, Ezgi Başak ERDOĞAN
OSMANGAZİ JOURNAL OF MEDICINE.2020;[Epub] CrossRef
Letter: Association of the Parathyroid Adenoma Volume and the Biochemical Parameters in Primary Hyperparathyroidism (Endocrinol Metab 26:62-66, 2011, Yul Hwang-Bo et al.)
Dong Jin Chung
Endocrinology and Metabolism.2011; 26(2): 185. CrossRef

Case Reports

A Case of Recurrent Ectopic Parathyroid Adenoma Developed 22 Years after the Initial Parathyroidectomy.: Yoon Jung Kim, Ji A Seo, Ji Mi Moon, Young Jin Seo, Hae Yoon Choi, Hye Sook Kim, Sin Gon Kim, Kyeung mook Choi, Sei Hyun Baik, Dong Seop Choi, Nan Hee Kim; J Korean Endocr Soc. 2009;24(4):260-264. Published online December 1, 2009; DOI: https://doi.org/10.3803/jkes.2009.24.4.260

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Abstract PDF: Persistent or recurrent primary hyperparathyroidism after initial parathyroid surgery occurs at rates of 1.5~10%. A single missed parathyroid adenoma accounts for the majority of persistent hyperparathyroidism, whereas metachronous parathyroid adenoma is a rare cause of recurrent hypercalcemia. We report a case of a 39-year-old female who presented with recurrent pancreatitis. She had symptoms of hyperparathyroidism such as hypercalcemia, hypophosphatemia, hypercalciuria, nephrocalcinosis, and osteoporosis. She had a 2-cm firm neck mass under the right submandibular area. She was diagnosed with primary hyperparathyroidism 22 years ago. At that time, the right upper and lower parathyroid glands were removed after exploration of all parathyroid glands, and a right upper parathyroid adenoma was diagnosed. Now, she had a second surgery to remove the right submandibular mass with intraoperative PTH monitoring, which was diagnosed as a parathyroid adenoma in an ectopic supernumerary parathyroid gland. Because of hungry bone syndrome, she received calcium carbonate replacement therapy and has no evidence of recurrence. Here, we report a recurrent parathyroid adenoma in the undescended, supernumerary parathyroid gland after a long interval from the initial surgery.

A Case of Parathyroid Adenoma Manifested as Acute Pancreatitis Accompanied Subclinical Cushing's Syndrome due to an Adrenal Adenoma.: Sang Hoon Leigh, Dong Sik Jo, Si Woo Kim, Yu Jin Jo, Sung Chul Cha, Jung Kwon Kim, Sun Hee Park, Hang Ji Kang; J Korean Endocr Soc. 2007;22(5):353-358. Published online October 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.5.353

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Abstract PDF: The manifestation of primary hyperparathyroidism by acute pancreatitis is a rare event. Furthermore, an asymptomatic adrenal mass may incidentally be detected by abdominal computed tomography. A mass that autonomously secretes glucocorticoid without any symptom is called subclinical Cushing's syndrome. In this study, we report a rare case of a parathyroid adenoma manifested as acute pancreatitis accompanied with subclinical Cushing's syndrome due to an incidental adrenal mass. A 47-year-old female patient presented with acute pancreatitis and hypercalcemia had a parathyroid mass detected by neck ultrasonography and a Tc(99m)-sestamibi scan. An abdominal computed tomography revealed a 3.1 x 4.3 cm mass which was detected in the left adrenal gland. The hormonal levels showed a high serum cortisol level, low ACTH level, and a high 24 h urine free cortisol level. The low and high dose dexamethasone suppression test showed no suppression. The parathyroid and adrenal masses were resected and the laboratory findings were normalized.

A Case of Primary Hyperparathyroidism due to Cystic Parathyroid Adenoma Presenting as Hypercalcemic Crisis Associated with Intracranial Hemorrhage.: Jin Ook Chung, Gwi Hong Jeong, Se In Hong, Dong Hyeok Cho, Dong Jin Chung, Min Young Chung; J Korean Endocr Soc. 2007;22(4):292-298. Published online August 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.4.292

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Most patients with hypercalcemia are asymptomatic or they have non-specific symptoms at diagnosis. Yet hypercalcemic crisis is a potentially fatal complication of hyperparathyroidism. Cystic parathyroid adenoma is a rare cause of primary hyperparathyroidism and hypercalcemic crisis. A 52-year-old woman was transferred to our hospital due to her relapsed drowsy mental state and renal insufficiency that occurred in course of her management for intracranial hemorrhage with manitol. The total serum calcium was 16.2 mg/dL and the intact parathyroid hormone was 546 pg/mL. Neck computed tomography showed a 3.1 x 1.8 cm sized cystic mass on the right thyroid lower pole. 99mTc-labelled sestamibi scintigraphy showed no significant uptake. In addition to prompt saline infusion and loop diuretics, the patient was given pamidronate to lower the serum calcium, and she was improved to an alert mental state with normal renal function. Surgical excision of the parathyroid cyst was performed. A histological examination confirmed a cystic parathyroid adenoma. The levels of plasma PTH and serum calcium were normalized after resection.

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Can Biochemical Markers and Ultrasonographical Diameters Be Used to Predict Histopathological Diagnosis in Patients with Primary Hyperparathyroidism?
Ahmet Dirikoc, Husniye Baser, Burcak Polat, Cevdet Aydin, Aylin Kilic Yazgan, Mehmet Kilic, Didem Ozdemir, Bekir Cakir
Indian Journal of Surgery.2022;[Epub] CrossRef
Preoperative Predictive Factors for Parathyroid Carcinoma in Patients with Primary Hyperparathyroidism
Jae Hyun Bae, Hyung Jin Choi, Yenna Lee, Min Kyong Moon, Young Joo Park, Chan Soo Shin, Do Jun Park, Hak Chul Jang, Seong Yeon Kim, Sang Wan Kim
Journal of Korean Medical Science.2012; 27(8): 890. CrossRef

A Case of Brown Tumor with Severe Hypercalcemia Caused by Parathyroid Adenoma.: Ji Oh Mok; J Korean Endocr Soc. 2003;18(2):221-226. Published online April 1, 2003

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Abstract PDF: Most of primary hyperparathyroidism results from parathyroid adenoma, and is characterized by hypercalcemia, reduced bone density, frequent renal stone, gastric ulcer, duodenal ulcer, muscle weakness, depression, hypertension, anemia, and rarely brown tumor. We had a case of an 80-year-old man having brown tumor caused by primary hyperparathyroidism on the right 10th rib confirmed by CT guided bone biopsy. The patient presented with decreased level of consciousness, acute gastric ulcer, acute duodenal ulcer, GB stones, renal insufficiency, depression, and osteoporosis. Serum calcium level was 16.7 mg/dL and the intact parathyroid hormone level was 3901pg/mL. A parathyroid mass was detected by neck CT and 99mTc-tetrofosmin parathyroid scan. The parathyroid tumor was removed and confirmed as a parathyroid adenoma by pathology. After operation, the patient was treated with vitamin D and calcium in response to the resulting hungry bone syndrome. The intact PTH level returned to a normal range after the removal of the parathyroid adenoma.

A Case of Intrathyroidal Parathyroid Adenoma Diagnosed by Fine-Needle Aspiration.: Hye Soo Kim, Eun Kyung Lee, Sung Ha Hwang, Myung Sook Kim, Eun Hee Lee, Jong Min Lee, Suk Young Kim, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2000;15(4-5):614-621. Published online January 1, 2001

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Abstract PDF: Fine-needle aspiration can be successfully utilized in the preoperative localization of abnormal parathyroid tissue. Fine-needle aspirate immunostaining for parathyroid hormone (PTH) or chromogranin and thyroglobulin (Tg) with measurement of PTH and Tg levels in the needle washings (FNAB-PTH and FNAB-Tg) can differentiate an enlarged parathyroid tissue from other cervical masses, such as thyroid nodules and lymph nodes. Parathyroid mass can be successfully aspirated by guidance of ultrasonography or computed tomography. Thyroid nodules are the most frequent cause of reduced accuracy of the imaging studies, such as ultrasonography, computer-assisted tomography and scintigraphy. We report on a case of unsuspected intrathyroidal parathyroid adenoma coexisted with thyroid follicular adenoma presenting two thyroid nodules. After biochemical diagnosis of hyperparathyroidism, we could not localize the parathyroid lesion specifically with any imaging method. Through fine-needle aspiration of two thyroid nodules, we performed the immunostaining for chromogranin and thyroglobulin and the measurement of PTH and thyroglobulin levels in the aspirated materials. The results confirmed the right nodule to be thyroid lesion and the left nodule to be parathyroid lesion preoperatively.

A Case of Mediastinal Cystic Parathyroid Adenoma Presenting as Acute Pancreatitis.: Young Sik Choi, Tae Jun Kwon, Jin Hong Park, Seol Young Yoon, Chang Ryol Lee, Jun Ho Lee, So Jin Choi, Sung Pyo Son, Kap Do Hur, Young Hyo Park; J Korean Endocr Soc. 1998;13(3):473-479. Published online January 1, 2001

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Abstract PDF: Hypercalcemia due to hyperparathyroidism is rarely associated with acute pancreatitis. But, the relationship between hypercalcemia and pancreatitis still remains controvesial. Ectopic parathyroid adenoma with cystic change is one of the rare causes of hyperparathyroidism, and is usually located in neck and mediastinum. We report a case of mediastinal parathyroid adenoma with cystic change associated with acute pancreatitis. A 54-year-old male presented with epigastric pain for 3 days. The serum calcium, phosphate, elastase were 16.8mg/dL, 1.1 mg/dL, 2772.0 ng/mL respectively and his parathyroid hormone level in serum was 651.84 pg/mL. Chest CT showed a mediastinal mass with well defined inhomogenously enhanced density located between SVC and aorta. The patient was diagnosed to hyperparathyroidism with acute pancreatitis due to mediastinal parathyroid adenoma with cystic change, and was surgically removed. The surgical biopsy showed parathyroid adenoma with cystic change. After operation his general condition was improved and serum calcium, phosphate, amylase, lipase level were normalized.

A Case of Hyperparathyroidism induced from Cystic Parathyroid Adenoma.: Ki Chul Sung, Kwon Choi, Won Tae Seo, Soon Ho Kwon, Sang Jong Lee, Joo Seob Keum, Myung Sook Kim; J Korean Endocr Soc. 1997;12(1):75-80. Published online January 1, 2001

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Abstract PDF: Cystic parathyroid adenoma is one of the rare causes of hyperparathyroidism, and is usually located in neck and mediastinum. This type of adenoma tends to cause increased serum level of parathyroid hormone and alkaline phosphatase, similar serum calcium level when compared to those of solid adenoma. Thanks to current radioimmunoassay and easy accessibility to serum autoanalyzer, serum calcium level and parathyroid hormone level are more easily measured, which in turn lead to more easier diagnosis of hyperparathyroidism. Also improvement in imaging and nuclear diagnostic method of parathyroid lesion are suggested to enable easy diagnosis of cystic parathyroid adenoma. A 35-year-old male presented with easy fatigability for 12 months. The serum calcium, phosphate, alkaline phosphotase were 11.5mg/dL, 1.4mg/dL, 194IU/L respectively and his parathyroid hormone level in serum was 126.42pg/mL. Neck CT showed enlargement of right lobe of thyroid gland with well defined inhomogenously enhanced density inside the right thyroid gland. The patient was diagnosed of hyperparathyroidim due to parathyroid adenoma and was surgically removed. The surgical biopsy showed cystic parathyroid adenoma. After operation his general condition was improved and serum calcium, phosphate, parathyroid hormone level were normalizd. We report a case of hyperparathyroidism caused by cystic parathyroid adenoma with brief review of literature.

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