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[Osteoporosis: diagnosis of disorders of bone tissue and calcium-phosphorus metabolism (lecture)].

Tentative diagnoses of lymphadenitis or Hodgkin's disease were not confirmed in a 12-year-old child by cytological investigations. Along with lymphoid cells, individual leukocytes, histiocytes, macrophages, and glandular cancer cells, the cytological preparation of the cervical lymph node biopsy specimen contained uncommon multinuclear cells looking like interfollicular thyroid islets. This indicated cancer metastasis and the site of primary involvement: the thyroid. The diagnosis was confirmed by the histological and radionuclide methods.