Abstract
Background: Pituitary masses in dogs are not uncommon tumors that can cause endocrine and neurologic signs and, if left untreated, can decrease life expectancy. Hypothesis: Dogs with pituitary masses that received radiation therapy (RT) have more favorable neurologic outcomes and longer survival times compared with untreated dogs. Animals: Nineteen dogs with a pituitary mass identified on CT or MR imaging were irradiated with 48 Gy given in 3 Gy daily-dose fractions. Twenty-seven untreated control dogs had pituitary masses. Methods: Medical records of dogs with pituitary masses were retrospectively reviewed for clinical signs, mass size, and outcome. Results: Median survival time was not reached in the treated group. Mean survival time in the treated group was 1,405 days (95% confidence interval [CI], 1,053-1,757 days) with 1-, 2-, and 3-year estimated survival of 93, 87, and 55%, respectively. Median survival in the nonirradiated group was 359 days (95% CI, 48-916 days), with a mean of 551 days (95% CI, 271-829 days). The 1-, 2-, and 3-year estimated survival was 45, 32, and 25%, respectively. Dogs that received RT for their pituitary tumors had significantly longer survival times than untreated dogs (P = .0039). Treated dogs with smaller tumors (based on maximal pituitary-to-brain height ratio or area of tumor to area of brain) lived longer than those with larger tumors (P < .001). Conclusions and Clinical Importance: When compared with untreated dogs, RT increased survival and controlled neurologic signs in dogs with pituitary masses.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1027-1033 |
| Number of pages | 7 |
| Journal | Journal of Veterinary Internal Medicine |
| Volume | 21 |
| Issue number | 5 |
| DOIs | |
| State | Published - Sep 2007 |
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Keywords
- Canine
- Macroadenoma
- Macrotumor
- Pituitary tumor
- Radiation therapy
ASJC Scopus subject areas
- veterinary(all)
Cite this
Survival, neurologic response, and prognostic factors in dogs with pituitary masses treated with radiation therapy and untreated dogs. / Kent, Michael S; Bommarito, David; Feldman, Edward C; Theon, Alain P.
In: Journal of Veterinary Internal Medicine, Vol. 21, No. 5, 09.2007, p. 1027-1033.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Survival, neurologic response, and prognostic factors in dogs with pituitary masses treated with radiation therapy and untreated dogs
AU - Kent, Michael S
AU - Bommarito, David
AU - Feldman, Edward C
AU - Theon, Alain P
PY - 2007/9
Y1 - 2007/9
N2 - Background: Pituitary masses in dogs are not uncommon tumors that can cause endocrine and neurologic signs and, if left untreated, can decrease life expectancy. Hypothesis: Dogs with pituitary masses that received radiation therapy (RT) have more favorable neurologic outcomes and longer survival times compared with untreated dogs. Animals: Nineteen dogs with a pituitary mass identified on CT or MR imaging were irradiated with 48 Gy given in 3 Gy daily-dose fractions. Twenty-seven untreated control dogs had pituitary masses. Methods: Medical records of dogs with pituitary masses were retrospectively reviewed for clinical signs, mass size, and outcome. Results: Median survival time was not reached in the treated group. Mean survival time in the treated group was 1,405 days (95% confidence interval [CI], 1,053-1,757 days) with 1-, 2-, and 3-year estimated survival of 93, 87, and 55%, respectively. Median survival in the nonirradiated group was 359 days (95% CI, 48-916 days), with a mean of 551 days (95% CI, 271-829 days). The 1-, 2-, and 3-year estimated survival was 45, 32, and 25%, respectively. Dogs that received RT for their pituitary tumors had significantly longer survival times than untreated dogs (P = .0039). Treated dogs with smaller tumors (based on maximal pituitary-to-brain height ratio or area of tumor to area of brain) lived longer than those with larger tumors (P < .001). Conclusions and Clinical Importance: When compared with untreated dogs, RT increased survival and controlled neurologic signs in dogs with pituitary masses.
AB - Background: Pituitary masses in dogs are not uncommon tumors that can cause endocrine and neurologic signs and, if left untreated, can decrease life expectancy. Hypothesis: Dogs with pituitary masses that received radiation therapy (RT) have more favorable neurologic outcomes and longer survival times compared with untreated dogs. Animals: Nineteen dogs with a pituitary mass identified on CT or MR imaging were irradiated with 48 Gy given in 3 Gy daily-dose fractions. Twenty-seven untreated control dogs had pituitary masses. Methods: Medical records of dogs with pituitary masses were retrospectively reviewed for clinical signs, mass size, and outcome. Results: Median survival time was not reached in the treated group. Mean survival time in the treated group was 1,405 days (95% confidence interval [CI], 1,053-1,757 days) with 1-, 2-, and 3-year estimated survival of 93, 87, and 55%, respectively. Median survival in the nonirradiated group was 359 days (95% CI, 48-916 days), with a mean of 551 days (95% CI, 271-829 days). The 1-, 2-, and 3-year estimated survival was 45, 32, and 25%, respectively. Dogs that received RT for their pituitary tumors had significantly longer survival times than untreated dogs (P = .0039). Treated dogs with smaller tumors (based on maximal pituitary-to-brain height ratio or area of tumor to area of brain) lived longer than those with larger tumors (P < .001). Conclusions and Clinical Importance: When compared with untreated dogs, RT increased survival and controlled neurologic signs in dogs with pituitary masses.
KW - Canine
KW - Macroadenoma
KW - Macrotumor
KW - Pituitary tumor
KW - Radiation therapy
UR - http://www.scopus.com/inward/record.url?scp=34848848142&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34848848142&partnerID=8YFLogxK
U2 - 10.1892/0891-6640(2007)21[1027:SNRAPF]2.0.CO;2
DO - 10.1892/0891-6640(2007)21[1027:SNRAPF]2.0.CO;2
M3 - Article
C2 - 17939560
AN - SCOPUS:34848848142
VL - 21
SP - 1027
EP - 1033
JO - Journal of Veterinary Internal Medicine
JF - Journal of Veterinary Internal Medicine
SN - 0891-6640
IS - 5
ER -