Hamartoma CT: Difference between revisions
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==Overview== | ==Overview== | ||
CT scan | CT scan is the modality of choice for the diagnosis of hamartoma. Findings on CT scan suggestive of hamartoma include smooth edge, focal collections of fat, or collections of fat alternating with foci of calcification.<ref name="pmid12376601">{{cite journal |vauthors=Gaerte SC, Meyer CA, Winer-Muram HT, Tarver RD, Conces DJ |title=Fat-containing lesions of the chest |journal=Radiographics |volume=22 Spec No |issue= |pages=S61–78 |year=2002 |pmid=12376601 |doi=10.1148/radiographics.22.suppl_1.g02oc08s61 |url=}}</ref><ref name="hbook"> Brant WE, Helms CA.(2007) Fundamentals of diagnostic radiology. Lippincott Williams & Wilkins.ISBN:0781765188</ref> | ||
==CT== | ==CT== | ||
*On computed tomography, common findings of pulmonary hamartoma, include: | *On computed tomography, common findings of pulmonary hamartoma, include:<ref name="pmid12376601">{{cite journal |vauthors=Gaerte SC, Meyer CA, Winer-Muram HT, Tarver RD, Conces DJ |title=Fat-containing lesions of the chest |journal=Radiographics |volume=22 Spec No |issue= |pages=S61–78 |year=2002 |pmid=12376601 |doi=10.1148/radiographics.22.suppl_1.g02oc08s61 |url=}}</ref><ref name="hbook"> Brant WE, Helms CA.(2007) Fundamentals of diagnostic radiology. Lippincott Williams & Wilkins.ISBN:0781765188</ref> | ||
:*Isodense or hypodense solid masses | :*Isodense or hypodense solid masses | ||
:*Heterogeneous contrast enhancement relative to adjacent normal parenchyma | :*Heterogeneous contrast enhancement relative to adjacent normal parenchyma | ||
:*Presence of fat in a well circumscribed solitary pulmonary nodule which does not demonstrate significant growth | :*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 [[Haunsfield]] measurement of -40 to -120 HU | :*The fat components may be localized or generalized within the nodule and will typically have a [[Haunsfield]] measurement of -40 to -120 HU | ||
:*[[Calcification]] is typically dispersed in the form of multiple clumps throughout the lesion in a popcorn configuration | :*[[Calcification]] is typically dispersed in the form of multiple clumps throughout the lesion in a popcorn configuration | ||
*On computed tomography, spleen hamartoma findings, include: | *On computed tomography, spleen hamartoma findings, include:<ref name="pmid25238476">{{cite journal |vauthors=Soto-Medina CA, Mier-Escurra EA, Treviño-Garza F, Ripa-Galván P |title=[Splenic hamartoma. Case report] |language=Spanish; Castilian |journal=Cirugía Y Cirujanos |volume=82 |issue=3 |pages=328–31 |year=2014 |pmid=25238476 |doi= |url=}}</ref> | ||
:*Isodense or hypodense solid masses | :*Isodense or hypodense solid masses | ||
:*Heterogeneous contrast enhancement relative to adjacent normal parenchyma | :*Heterogeneous contrast enhancement relative to adjacent normal parenchyma | ||
*On computed tomography, common findings of renal hamartoma, include: | *On computed tomography, common findings of renal hamartoma, include:<ref name="pmid9503504">{{cite journal |vauthors=Eble JN |title=Angiomyolipoma of kidney |journal=Seminars in Diagnostic Pathology |volume=15 |issue=1 |pages=21–40 |year=1998 |pmid=9503504 |doi= |url=}}</ref> | ||
:*Lesions involve the cortex and demonstrate macroscopic fat (less than -20 HU) | :*Lesions involve the cortex and demonstrate macroscopic fat (less than -20 HU) | ||
:*Small renal hamartomas volume averaging may make differentiation from a small cyst difficult | :*Small renal hamartomas volume averaging may make differentiation from a small cyst difficult | ||
| Line 27: | Line 27: | ||
:*Calcification is rare | :*Calcification is rare | ||
*On computed tomography, common findings of hypothalamic hamartoma, include: | *On computed tomography, common findings of hypothalamic hamartoma, include:<ref name="pmid17544947">{{cite journal |vauthors=Fenoglio KA, Wu J, Kim do Y, Simeone TA, Coons SW, Rekate H, Rho JM, Kerrigan JF |title=Hypothalamic hamartoma: basic mechanisms of intrinsic epileptogenesis |journal=Seminars in Pediatric Neurology |volume=14 |issue=2 |pages=51–9 |year=2007 |pmid=17544947 |doi=10.1016/j.spen.2007.03.002 |url=http://linkinghub.elsevier.com/retrieve/pii/S1071-9091(07)00021-6}}</ref> | ||
:* Iso-attenuating nodule of soft tissue | :* Iso-attenuating nodule of soft tissue | ||
:* Calcification is rare | :* Calcification is rare | ||
Revision as of 20:15, 26 January 2016
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Hamartoma CT On the Web |
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American Roentgen Ray Society Images of Hamartoma CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2]
Overview
CT scan is the modality of choice for the diagnosis of hamartoma. Findings on CT scan suggestive of hamartoma include smooth edge, focal collections of fat, or collections of fat alternating with foci of calcification.[1][2]
CT
- 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 Haunsfield measurement of -40 to -120 HU
- Calcification is typically dispersed in the form of multiple clumps throughout the lesion in a popcorn configuration
- On computed tomography, spleen hamartoma findings, include:[3]
- Isodense or hypodense solid masses
- Heterogeneous contrast enhancement relative to adjacent normal parenchyma
- On computed tomography, common findings of renal hamartoma, include:[4]
- Lesions involve the cortex and demonstrate macroscopic fat (less than -20 HU)
- Small renal hamartomas volume averaging may make differentiation from a small cyst difficult
- Renal hamartomas are are fat-poor
- Calcification is rare
- On computed tomography, common findings of hypothalamic hamartoma, include:[5]
- Iso-attenuating nodule of soft tissue
- Calcification is rare
- There is no contrast enhancement
Gallery
-
CT scan (CT) shows a well circumcised lesion, with intralesional fat and calcification "popcorn-like appearance" adjacent to the hilum. -
CT scan (CT) shows an isodense solid mass in the inferior pole of the spleen.
References
- ↑ 1.0 1.1 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.
- ↑ 2.0 2.1 Brant WE, Helms CA.(2007) Fundamentals of diagnostic radiology. Lippincott Williams & Wilkins.ISBN:0781765188
- ↑ 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.
- ↑ Eble JN (1998). "Angiomyolipoma of kidney". Seminars in Diagnostic Pathology. 15 (1): 21–40. PMID 9503504.
- ↑ Fenoglio KA, Wu J, Kim do Y, Simeone TA, Coons SW, Rekate H, Rho JM, Kerrigan JF (2007). "Hypothalamic hamartoma: basic mechanisms of intrinsic epileptogenesis". Seminars in Pediatric Neurology. 14 (2): 51–9. doi:10.1016/j.spen.2007.03.002. PMID 17544947.