Survival Times Associated with Various Tumor Types Following Radiotherapya

Tumor Type

Species

Modality

Median Survival Time

Nasal tumors (sarcoma or carcinoma)

Dogs

SRT

441–546 days (14–18 mo) (1, 2, 3)

Nasal tumors (lymphoma)

Cats

SRT

365 days (12 mo) (4)

Brain tumors (glioma)

Dogs

SRT

349 days (11.6 mo) (5)

Brain tumors (meningioma)

Dogs

SRT

561 days (18.7 mo) (6)

Soft tissue sarcoma (postoperative)

Dogs

Conventionally fractionated definitive intent radiation therapyb

1,108 days (36 mo) (7, 8)

Primary lung tumors (carcinoma)

Dogs

SRT

343 days (11.4 mo (9)

Adrenal tumors

Dogs

SRT

1,030 days (34.3 mo) (10, 11)

Infiltrative lipoma (gross or microscopic disease)

Dogs

Conventionally fractionated definitive intent radiation therapy

1,760 days (58.7 mo) (12)

Pituitary tumors

Dogs

Conventionally fractionated definitive intent radiation therapy or SRT

311 days (10.4 mo SRT) (13)

1,405 days (46.8 mo conventional fractionation; reported as a mean survival because median was not reached) (14)

Pituitary tumors

Cats

SRT

741–1,072 days (24.7–35.7 mo); may result in remission of insulin resistance or insulin dose reduction for acromegalic cats (15, 16)

Anal sac adenocarcinoma (gross disease)

Dogs

Palliative intent radiation therapyc

329 days (11 mo) (17)

Thyroid carcinoma (gross disease)

Dogs

Palliative intent radiation therapy or SRT

170 days (5.7 mo palliative) (18)

362 days (12 mo SRT) (19)

Feline injection site carcinoma

Cats

SRT

302 days (10 mo) (20)

a SRT, stereotactic radiotherapy.

b Conventionally fractionated definitive intent radiation therapy is typically 10–20 fractions delivered on consecutive weekdays.

c Palliative intent radiation therapy is typically 4–6 fractions delivered over the course of a week to a month with a dose intensity that is much less than SRT.