Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0005940 (bone disease)
 7,459 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Aluminum toxicity in dialysis patients is associated with decreased bone turnover and a relative parathyroid hormone (PTH) deficiency. Desferrioxamine (DFO), a chelating agent, has been reported to improve bone histology in aluminum associated, low turnover bone disease in dialysis patients not subjected to parathyroidectomy. Information on the effect of DFO therapy on parathyroid gland function is lacking. In the present study, in addition to changes in bone histology, parathyroid gland function was evaluated in 18 hemodialysis patients with aluminum associated, low turnover bone disease (osteomalacia and aplastic bone disease) before and after one year of DFO treatment (1 to 6 g/week). Parathyroid gland function was assessed by using a calcium free and high calcium (3.5 to 4 mEq/liter) hemodialysis bath.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Desferrioxamine therapy in hemodialysis patients with aluminum-associated bone disease. 277 Jan 15

Hypercalcemia associated with breast cancer arises either from metastatic bone disease or from paraneoplastic secretion of parathyroid hormone-related peptide. We report a female 69-year-old patient with invasive intraductal breast cancer and hypercalcemia (3,4 mmol/l) referred to endocrinologist. Standard care in oncology was refused and with respect to the presence of estrogenic receptors the patient accepted only antiestrogenic treatment. Bone scan revealed no skeletal metastasis. Entry laboratory exam confirmed hypercalcemia, hypophosphatemia and significantly elevated parathyroid hormone (793 ng/l). The patient complained of bone pain and dyspepsia. Neck ultrasound showed a multinodular goiter with particularly enlarged left lobe. Parathyroid gland scintigraphy revealed a possible parathyroid adenoma behind the lower pole of the left thyroid lobe. The patient underwent thyroidectomy with an excision of the parathyroid mass. Microscopic examination identified a benign adenomatous goitre and benign parathyroid adenoma. Postoperatively, both serum calcium and parathyroid hormone normalized. Replacement of calcium and vitamin D were initiated both with bisphosphonate with regard to newly diagnosed osteoporosis. This case demonstrates a patient with breast cancer and hypercalcemia unrelated to the malignant disease. Primary hyperparathyroidism should be considered as a possible cause of hypercalcemia in breast cancer patients in the setting of negative bone scan, elevated parathyroid hormone and mildly deteriorated bone mineral density.
 ...
PMID:[Primary hyperparathyroidism as a cause of hypercalcemia in a patient with breast cancer]. 2139 55

Parathyroid gland carcinoma is a rare malignancy. The tumor is mostly functioning, causing severe hyperparathyroidism, with high serum calcium level and severe bone disease. Non-functioning parathyroid carcinomas are extremely rare. We report on a 60-year-old male patient admitted to ENT Department due to a large neck tumor mass compressing the thyroid and trachea. Preoperatively, thyroid hormone, parathyroid hormone (PTH) and calcium serum levels were normal. The following immunohistochemical markers (DAKO, Denmark) were used: bcl-2; CD-10; Chromogranin-A; Cyclin-D1; EMA; Ki-67; Mdm-2; p-53; PGP-9,5; RCC; Synaptophysin; Thyroglobulin; and TTF-1. Immunohistochemical analysis indicated the diagnosis of a primary parathyroid gland carcinoma. Tumor cells showed diffusely positive immunohistochemical staining with chromogranin-A and PGP-9,5, positive staining of variable intensity with synaptophysin, and weakly positive reaction with EMA. Also, the cytoplasm of tumor cells was diffusely positively stained with bcl-2, while the nuclei showed positive reaction with p-53 oncogene and TTF-1. The remaining markers (CD-10, cyclin-D1, Ki-67, Mdm-2, RCC and thyroglobulin) were negative. Four years after the surgery, the patient died from renal carcinoma pulmonary metastases and liver cirrhosis complications. In conclusion, non-functioning parathyroid gland carcinoma is a very rare disease. Detailed immunohistochemical analysis is needed to distinguish it from other thyroid and parathyroid neoplasms and metastatic carcinoma. Surgical treatment is presently the best mode of therapy.
 ...
PMID:Non-functioning parathyroid gland carcinoma: case report. 2226 88