PMC7924162_01
Trephine biopsy of the bone marrow. A, Increased bone turnover characterized by osteoclastic resorption (arrows) and osteoblastic activity (stars). B, Intratrabecular osteoclastic tunneling resorption cones with peritrabecular fibrosis, which is the hallmark of hyperparathyroidism affecting the bone.
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She underwent a bone marrow biopsy, which showed bone marrow fibrosis (Fig. 1).
PTH scintigraphy showing tracer accumulation in the lesion noted in the right lower pole of thyroid in the initial image at 10 minutes (A), which persists in the delayed image at 60 minutes (B). PTH = parathyroid hormone.
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Parathyroid scintigraphy revealed a right parathyroid adenoma (Fig. 2), which was concordant with the ultrasound findings.