Introduction. Parathyroid adenoma is the leading cause of primary
hyperparathyroidism in 85% of cases, followed by multiglandular hyperplasia
(15%) and parathyroid carcinoma (1%). Clinical complications can manifest in
the bones, gastrointestinal tract, kidneys, heart, and can also lead to
mental disorders and altered consciousness, including coma. Surgical
intervention is the primary treatment for primary hyperparathyroidism.
However, for patients who do not meet the criteria for surgery or choose to
avoid it, medical management is provided. Case Report. A 52-year-old female
patient presented in late 2019 with a visible, firm, irregular mass above
the right clavicle. Initial bone marker tests raised suspicion of a
parathyroid adenoma. The COVID-19 pandemic caused delays in further
specialized examinations and postponed surgical treatment. The referring
physician scheduled a parathyroid scintigraphy while awaiting an
endocrinologist?s evaluation. Surgery was eventually performed in March
2023. Despite consistently elevated parathyroid hormone and ionized calcium
levels, the patient avoided potential complications due to continuous
monitoring by her referring physician. Conclusion. Early diagnosis of
parathyroid adenoma reduces the risk of complications and improves the
quality of life for patients.