Phosphaturic mesenchymal tumour, mixed connective tissue type

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Phosphaturic mesenchymal tumour, mixed connective tissue type
Diagnosis in short
Site soft tissue, bone
Blood work low serum phosphate

Phosphaturic mesenchymal tumour, mixed connective tissue type, abbreviated PMTMCT, is a rare tumour.

General

  • Extremely rare.
  • Hypophosphatemia.[1]
  • Most common cause of oncogenic osteomalacia (tumour-induced osteomalacia).[2]

Gross

  • Soft tissue or bone.[3]
  • Often small - thus hard to identify.[4]

Microscopic

Features:[2]

  • Spindle cells without atypia in an eosinophilic matrix.
  • Osteoclast-type giant cells.
  • +/-Calcifications.

Image:

References

  1. ↑ Papierska, L.; Ćwikła, JB.; Misiorowski, W.; Rabijewski, M.; Sikora, K.; Wanyura, H. (2013). "Unusual case of phosphaturic mesenchymal tumor.". Pol Arch Med Wewn 123 (5): 255-6. PMID 23722193.
  2. ↑ 2.0 2.1 William, J.; Laskin, W.; Nayar, R.; De Frias, D. (Aug 2012). "Diagnosis of phosphaturic mesenchymal tumor (mixed connective tissue type) by cytopathology.". Diagn Cytopathol 40 Suppl 2: E109-13. doi:10.1002/dc.21647. PMID 22927293.
  3. ↑ Jiang, Y.; Xia, WB.; Xing, XP.; Silva, BC.; Li, M.; Wang, O.; Zhang, HB.; Li, F. et al. (Sep 2012). "Tumor-induced osteomalacia: an important cause of adult-onset hypophosphatemic osteomalacia in China: Report of 39 cases and review of the literature.". J Bone Miner Res 27 (9): 1967-75. doi:10.1002/jbmr.1642. PMID 22532501.
  4. ↑ Ledford, CK.; Zelenski, NA.; Cardona, DM.; Brigman, BE.; Eward, WC. (Jul 2013). "The Phosphaturic Mesenchymal Tumor: Why is Definitive Diagnosis and Curative Surgery Often Delayed?". Clin Orthop Relat Res. doi:10.1007/s11999-013-3178-1. PMID 23868423.
  5. ↑ Woo, VL.; Landesberg, R.; Imel, EA.; Singer, SR.; Folpe, AL.; Econs, MJ.; Kim, T.; Harik, LR. et al. (Dec 2009). "Phosphaturic mesenchymal tumor, mixed connective tissue variant, of the mandible: report of a case and review of the literature.". Oral Surg Oral Med Oral Pathol Oral Radiol Endod 108 (6): 925-32. doi:10.1016/j.tripleo.2009.07.005. PMID 19828339.
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