Abstract
This retrospective analysis of 15 dogs with postcontrast ring enhancing brain lesions, each detected by a single Computed Tomography [CT] examination, searched for any association between their CT appearance and the pathologic diagnosis. In a subgroup of these dogs [n = 7] necropsied within 2 days of the last CT scan, we evaluated whether there was any anatomic correlation between the ring zone and the histopathologic features of the lesions. Our study consisted of eight dogs with primary brain tumors [3 meningiomas, 3 astrocytomas, 1 mixed glioma, 1 oligodendroglioma], 4 with metastatic brain tumors [2 fibrosarcomas, 1 mammary carcinoma, 1 melanoma] and 3 with non‐neoplastic brain lesions [2 intraparenchymal hemorrhages, 1 pyogranulomatous meningoencephalitis]. The overall size and shape of the contrast enhancing CT lesions, as well as the thickness, surface texture and degree of enhancement of the ring were subjectively evaluated. No association was found between the CT lesion characteristics and the pathologic diagnosis. In the sub‐group of dogs euthanatized within 2 days of the CT examination, distinct histologic features which anatomically correlated with the zone of ring enhancement were found in 3 of 7 lesions. The findings of this study are consistent with those of ring‐enhancing lesions in people, and indicates that CT ring enhancement is a non‐specific phenomenon which can occur in a variety of neoplastic and non‐neoplastic lesions in the dog.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 16-20 |
| Number of pages | 5 |
| Journal | Veterinary Radiology & Ultrasound |
| Volume | 36 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 1995 |
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Keywords
- brain
- computed tomography
- dog
- neuropathology
- ring enhancement
ASJC Scopus subject areas
- veterinary(all)
Cite this
INTRACRANIAL RING ENHANCING LESIONS IN DOGS : A CORRELATIVE CT SCANNING AND NEUROPATHOLOGIC STUDY. / Wolf, Michael; Pedroia, Vince; Higgins, Robert; Koblik, Philip D.; Turrel, Jane M.; Owens, Jerry M.
In: Veterinary Radiology & Ultrasound, Vol. 36, No. 1, 01.01.1995, p. 16-20.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - INTRACRANIAL RING ENHANCING LESIONS IN DOGS
T2 - A CORRELATIVE CT SCANNING AND NEUROPATHOLOGIC STUDY
AU - Wolf, Michael
AU - Pedroia, Vince
AU - Higgins, Robert
AU - Koblik, Philip D.
AU - Turrel, Jane M.
AU - Owens, Jerry M.
PY - 1995/1/1
Y1 - 1995/1/1
N2 - This retrospective analysis of 15 dogs with postcontrast ring enhancing brain lesions, each detected by a single Computed Tomography [CT] examination, searched for any association between their CT appearance and the pathologic diagnosis. In a subgroup of these dogs [n = 7] necropsied within 2 days of the last CT scan, we evaluated whether there was any anatomic correlation between the ring zone and the histopathologic features of the lesions. Our study consisted of eight dogs with primary brain tumors [3 meningiomas, 3 astrocytomas, 1 mixed glioma, 1 oligodendroglioma], 4 with metastatic brain tumors [2 fibrosarcomas, 1 mammary carcinoma, 1 melanoma] and 3 with non‐neoplastic brain lesions [2 intraparenchymal hemorrhages, 1 pyogranulomatous meningoencephalitis]. The overall size and shape of the contrast enhancing CT lesions, as well as the thickness, surface texture and degree of enhancement of the ring were subjectively evaluated. No association was found between the CT lesion characteristics and the pathologic diagnosis. In the sub‐group of dogs euthanatized within 2 days of the CT examination, distinct histologic features which anatomically correlated with the zone of ring enhancement were found in 3 of 7 lesions. The findings of this study are consistent with those of ring‐enhancing lesions in people, and indicates that CT ring enhancement is a non‐specific phenomenon which can occur in a variety of neoplastic and non‐neoplastic lesions in the dog.
AB - This retrospective analysis of 15 dogs with postcontrast ring enhancing brain lesions, each detected by a single Computed Tomography [CT] examination, searched for any association between their CT appearance and the pathologic diagnosis. In a subgroup of these dogs [n = 7] necropsied within 2 days of the last CT scan, we evaluated whether there was any anatomic correlation between the ring zone and the histopathologic features of the lesions. Our study consisted of eight dogs with primary brain tumors [3 meningiomas, 3 astrocytomas, 1 mixed glioma, 1 oligodendroglioma], 4 with metastatic brain tumors [2 fibrosarcomas, 1 mammary carcinoma, 1 melanoma] and 3 with non‐neoplastic brain lesions [2 intraparenchymal hemorrhages, 1 pyogranulomatous meningoencephalitis]. The overall size and shape of the contrast enhancing CT lesions, as well as the thickness, surface texture and degree of enhancement of the ring were subjectively evaluated. No association was found between the CT lesion characteristics and the pathologic diagnosis. In the sub‐group of dogs euthanatized within 2 days of the CT examination, distinct histologic features which anatomically correlated with the zone of ring enhancement were found in 3 of 7 lesions. The findings of this study are consistent with those of ring‐enhancing lesions in people, and indicates that CT ring enhancement is a non‐specific phenomenon which can occur in a variety of neoplastic and non‐neoplastic lesions in the dog.
KW - brain
KW - computed tomography
KW - dog
KW - neuropathology
KW - ring enhancement
UR - http://www.scopus.com/inward/record.url?scp=84995171740&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84995171740&partnerID=8YFLogxK
U2 - 10.1111/j.1740-8261.1995.tb00206.x
DO - 10.1111/j.1740-8261.1995.tb00206.x
M3 - Article
VL - 36
SP - 16
EP - 20
JO - Veterinary Radiology and Ultrasound
JF - Veterinary Radiology and Ultrasound
SN - 1058-8183
IS - 1
ER -