From persistent hypercalcemia to parathyroid carcinoma: a case report of acute urinary retention and the diagnostic role of Ki-67 - Report - MDSpire

From persistent hypercalcemia to parathyroid carcinoma: a case report of acute urinary retention and the diagnostic role of Ki-67

  • By

  • Chang Deng

  • Chun Huang

  • Xinliang Su

  • May 4, 2026

  • 0 min

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Transitioning from Chronic Hypercalcemia to Parathyroid Carcinoma: A Case Study

Overview

This case report presents a 59-year-old male diagnosed with parathyroid carcinoma after being misdiagnosed for four years. The patient exhibited severe hypercalcemia leading to acute urinary retention, highlighting the importance of recognizing atypical symptoms in the diagnosis of parathyroid carcinoma.

Background

Parathyroid carcinoma is a rare endocrine neoplasm that can often be misidentified due to overlapping symptoms with benign conditions. The complexity of diagnosing this malignancy is heightened by atypical presentations, such as acute urinary retention, which may not be commonly associated with hypercalcemia. Understanding these nuances is critical for timely and accurate diagnosis and treatment.

Data Highlights

No numerical data or trial data available in the article.

Key Findings

  • The patient was initially misdiagnosed as having benign parathyroid hyperplasia and adenoma.
  • Over four years, the patient underwent three surgical procedures before a definitive diagnosis of parathyroid carcinoma was made.
  • The patient presented with acute urinary retention, a rare symptom associated with severe hypercalcemia.
  • Pathological analysis revealed a Ki-67 proliferation index of 8%, indicating a potential malignancy.
  • This case emphasizes the need for interdisciplinary collaboration in diagnosing parathyroid carcinoma.

Clinical Implications

Discuss the importance of interdisciplinary collaboration in diagnosis and management.

Conclusion

This case underscores the importance of recognizing atypical presentations of parathyroid carcinoma and the need for careful diagnostic evaluation to avoid misdiagnosis and ensure appropriate management.

References

  1. Updates in Surgery, 2023 -- The Advancement of Parathyroid Localization Diagnostic Techniques Over the Last Ten Years: A Single-Center Perspective
  2. Outcomes of Subtotal Parathyroidectomy in Patients with Secondary Hyperparathyroidism Due to Chronic Renal Failure: A 20-Year Review
  3. When Thyroid and Parathyroid Collide, 2023 -- A case highlighting diagnostic challenges in endocrine pathology
  4. Avoiding overdiagnosis of parathyroid carcinoma | Virchows Archiv | Springer Nature Link, 2023
  5. the pathologist — When Thyroid and Parathyroid Collide
  6. Avoiding overdiagnosis of parathyroid carcinoma | Virchows Archiv | Springer Nature Link
  7. Chapter 13: Changes in 2022 WHO classification of parathyroid tumors - ScienceDirect

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