Hamartoma CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2] Vamsikrishna Gunnam M.B.B.S [3]

Overview

CT scan is the imaging modality of choice for the diagnosis of hamartoma. On CT scan, hamartoma is characterized by focal collections of fat, a lesion with a smooth edge, and collections of fat alternating with foci of calcification.

CT scan

Pulmonary Hamartoma

Chest CT scan may be helpful in the diagnosis of pulmonary hamartoma. Findings on CT scan suggestive of hamartoma include:[1][2][3][4][5][6]

  • Isodense or hypodense solid masses
  • Heterogeneous contrast enhancement relative to adjacent normal parenchyma
  • Presence of fat in a well circumscribed solitary pulmonary nodule which does not demonstrate significant growth
  • The fat components may be localized or generalized within the nodule and will typically have a Hounsfield measurement of -40 to -120 HU
  • Calcification is typically dispersed in the form of multiple lumps throughout the lesion in a popcorn configuration

Spleen Hamartoma

Abdominal CT scan may be helpful in the diagnosis of splenic hamartoma. Findings on abdominal CT scan suggestive of splenic hamartoma include:[7]

  • Isodense or hypodense solid masses

Renal Hamartoma

Abdominal CT scan may be helpful in the diagnosis of renal hamartoma. Findings on abdominal CT scan suggestive of renal hamartoma include:[7][8]

Hypothalamic Hamartoma

Head CT scan may be helpful in the diagnosis of hypothalamic hamartoma. Findings on head CT scan suggestive of hypothalamic hamartoma include:[9][10][11]

References

  1. Gaerte SC, Meyer CA, Winer-Muram HT, Tarver RD, Conces DJ (2002). "Fat-containing lesions of the chest". Radiographics. 22 Spec No: S61–78. doi:10.1148/radiographics.22.suppl_1.g02oc08s61. PMID 12376601.
  2. Brant WE, Helms CA.(2007) Fundamentals of diagnostic radiology. Lippincott Williams & Wilkins.ISBN:0781765188
  3. Siegelman, S S; Khouri, N F; Scott, W W; Leo, F P; Hamper, U M; Fishman, E K; Zerhouni, E A (1986). "Pulmonary hamartoma: CT findings". Radiology. 160 (2): 313–317. doi:10.1148/radiology.160.2.3726106. ISSN 0033-8419.
  4. Gaerte, Scott C.; Meyer, Cristopher A.; Winer-Muram, Helen T.; Tarver, Robert D.; Conces, Dewey J. (2002). "Fat-containing Lesions of the Chest". RadioGraphics. 22 (suppl_1): S61–S78. doi:10.1148/radiographics.22.suppl_1.g02oc08s61. ISSN 0271-5333.
  5. Gleeson T, Thiessen R, Hannigan A, Murphy D, English JC, Mayo JR (October 2013). "Pulmonary hamartomas: CT pixel analysis for fat attenuation using radiologic-pathologic correlation". J Med Imaging Radiat Oncol. 57 (5): 534–43. doi:10.1111/1754-9485.12083. PMID 24119266.
  6. Singh H, Khanna SK, Chandran V, Jetley RK (January 1999). "PULMONARY HAMARTOMA". Med J Armed Forces India. 55 (1): 79–80. doi:10.1016/S0377-1237(17)30328-3. PMC 5531795. PMID 28775580.
  7. 7.0 7.1 Soto-Medina CA, Mier-Escurra EA, Treviño-Garza F, Ripa-Galván P (2014). "[Splenic hamartoma. Case report]". Cirugía Y Cirujanos (in Spanish; Castilian). 82 (3): 328–31. PMID 25238476.
  8. Eble JN (1998). "Angiomyolipoma of kidney". Seminars in Diagnostic Pathology. 15 (1): 21–40. PMID 9503504.
  9. Soto-Medina CA, Mier-Escurra EA, Treviño-Garza F, Ripa-Galván P (2014). "[Splenic hamartoma. Case report]". Cirugía Y Cirujanos (in Spanish; Castilian). 82 (3): 328–31. PMID 25238476.
  10. Leiter Herrán F, Restrepo CS, Alvarez Gómez DI, Suby-Long T, Ocazionez D, Vargas D (March 2017). "Hamartomas from head to toe: an imaging overview". Br J Radiol. 90 (1071): 20160607. doi:10.1259/bjr.20160607. PMC 5601532. PMID 27936889.
  11. Burton EM, Ball WS, Crone K, Dolan LM (1989). "Hamartoma of the tuber cinereum: a comparison of MR and CT findings in four cases". AJNR Am J Neuroradiol. 10 (3): 497–501. PMID 2501981.


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