99mTc-sulfur colloid bone marrow scintigraphy in diagnosis of diffuse pulmonary extramedullary hematopoiesis secondary to myelofibrosis

Ming Yang, Matthew F. Covington, Ba D. Nguyen, Geoffrey B. Johnson, Ruben A. Mesa, Michael C. Roarke

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Our objective was to define the role of combined 99mTc-sulfur colloid bone marrow (SC BM) scintigraphy, SPECT or SPECT/ CT, and chest CT in diagnosing diffuse pulmonary extramedullary hematopoiesis (PEMH) in patients with myelofibrosis. Methods: We retrospectively reviewed 99mTc-SC BM scintigraphy scans performed at our institution for the diagnosis of diffuse PEMH, as well as accompanying chest CT and SPECT/CT imaging findings. Relevant clinical information, including respiratory manifestations, pulmonary hypertension, and subjective response to whole-lung radiation therapy, was also summarized. Results: Twenty-two myelofibrosis patients with 27 99mTc-SC BM scintigraphy scans were diagnosed with diffuse PEMH. In 21 patients (95%) with accompanying chest CT and SPECT/CT scans, the most common CT findings were ground-glass opacity, interstitial infiltration, and pleural effusion. Of 20 patients (91%) who underwent 2-dimensional echocardiography studies, 12 (55%) were diagnosed with pulmonary hypertension. All 12 patients exhibited the aforementioned nonspecific CT imaging findings, with 8 (66%) of them presenting with respiratory symptoms, including dyspnea, shortness of breath, and cough. In the remaining 8 patients, without pulmonary hypertension, half had similar respiratory symptoms. Fourteen patients (64%) of this cohort received whole-lung radiation therapy, of whom 7 (50%) experienced symptom relief after therapy. Conclusion: Nonspecific respiratory symptoms should raise concern about pulmonary hypertension and diffuse PEMH in patients with advanced-stage myelofibrosis. Combined 99mTc-SC BM scintigraphy and SPECT/ CT is a promising noninvasive imaging tool to diagnose this rare clinical entity.

Original languageEnglish
Pages (from-to)368-372
Number of pages5
JournalJournal of Nuclear Medicine Technology
Volume46
Issue number4
DOIs
StatePublished - Dec 1 2018

Keywords

  • Hematology
  • Myelofibrosis
  • Pulmonary hematopoiesis
  • Respiratory
  • SPECT/CT
  • Tc-99m sulfur colloid scintigraphy

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