The validity of individual radiological signs for the differentiation of osteoplastic bone metastases from osteitis deformans has been investigated quantitatively (103 skeletal metastases from carcinoma of the prostate, 45 cases of Paget's disease, two osteoplastic bone metastases from a carcinoma of rectum and bronchus). The similarities were demonstrated by three cases observed by us. Problems in the quantitative evaluation of the radiographs are discussed.
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http://dx.doi.org/10.1055/s-0029-1230489 | DOI Listing |
EJNMMI Rep
December 2024
Department of Oncology and Nuclear Medicine, University Hospital Centre Sestre Milosrdnice, Zagreb, Croatia.
Brown tumors or osteitis fibrosa cystica are a rare bone metabolism disorder that may mimic cancer metastasis. It represents a late manifestation of prolonged and mostly unrecognized hyperparathyroidism. In this case report we present a 44-year-old female patient with multiple lesions detected on bone scintigraphy and F- FDG-PET/CT, initially interpreted as a bone metastatic disease, rather than multiple gigantocellular bone tumors.
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
November 2024
Unit of Endocrinology, University Hospital of Pisa, Pisa, Italy.
Background: Brown tumors are rare bone manifestations of primary hyperparathyroidism (PHPT) that may occur at different sites either as single or multiple lesions and they can easily be mistaken for malignant lesions. Neither bone site nor morphological or functional imaging are useful to drive the differential diagnosis and biopsy is often the only conclusive procedure.
Case Description: We report the case of a 53 years-old man referred to our outpatient clinic for severe symptomatic PHPT complicated by nephrolithiasis and osteoporosis.
Cureus
July 2024
Neurological Surgery, Faculdade Ciências Médicas de Minas Gerais, Belo Horizonte, BRA.
Synovitis, acne, pustulosis, hyperostosis, osteitis (SAPHO) syndrome is a rare disorder of unknown etiology with heterogeneous clinical manifestations. We describe two cases of patients diagnosed with SAPHO syndrome mimicking spinal bone metastases. A literature review was conducted to identify similar previously reported cases.
View Article and Find Full Text PDFCureus
April 2024
Hematology and Medical Oncology, University of Missouri- Columbia, Columbia, USA.
Brown tumors (also known as osteitis fibrosa cystica) are rare complications of end-stage renal disease (ESRD) and secondary hyperparathyroidism (HPT), characterized by focal bone lesions that resemble neoplasms. They are often misdiagnosed as metastatic bone disease, especially in patients with a history of malignancy. We present a case of a 60-year-old man with a history of renal cell carcinoma (RCC), and ESRD on hemodialysis (HD), who developed diffuse bone lesions on imaging with osteolytic/osteoblastic appearance concerning metastases, but on further workup was found to have brown tumors.
View Article and Find Full Text PDFCalcif Tissue Int
May 2024
Department of Endocrinology, Clinica Polispecialistica "Casa del Sole", Formia, LT, Italy.
In this case report, we describe an uncommon case of neuroendocrine cancer of unknown origin began with cauda equina syndrome in a patient affected by Paget disease of bone (PDB). A 76-year-old man with diagnosis of PDB, without history of pain or bone deformity, developed sudden severe low back pain. Bone alkaline phosphatase was increased and MRI and whole-body scintigraphy confirmed the localization of the disease at the third vertebra of the lumbar spine.
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