Secondary Primary Carcinoma Arising on the Flap Skin in the Oral Cavity-Case Series.

Oral squamous cell carcinoma (OSCC) causes considerable morbidity and mortality rates, posing a major global health burden. The management of the OSCC is multidisciplinary, but still the gold standard is surgical resection and reconstruction of the postablative defect. The appearance of secondary primary OSCC is not uncommon; however, it is quite rare that it appears on the skin of the flap that was used for reconstruction during the previous surgical therapy.

Expect the unexpected: Brown tumor of the mandible as the first manifestation of primary hyperparathyroidism.

Hyperparathyroidism (HPT) is a condition in which one or more parathyroid glands produce increased levels of parathyroid hormone (PTH), causing disturbances in calcium homeostasis. Most commonly HPT presents with asymptomatic hypercalcemia but the clinical spectrum may include disturbances reflecting the combined effects of increased PTH secretion and hypercalcemia. Brown tumors are rare, benign, tumor-like bone lesions, occurring in 1.