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Types of Cancer > OncoLink Vet > Veterinary Oncology > Tumors
Sebaceous Gland Tumors
Supported by the Savannah and Barry French Poodle Memorial Fund
Affiliation:
University of Pennsylvania School of Veterinary Medicine
Last Modified: August 21, 2005
Michael H. Goldschmidt, MSc, BVMS, MRCVS, Diplomate ACVP Professor and Head, Laboratory of Pathology and Toxicology Chief, Surgical Pathology Department of Pathobiology
Frances S. Shofer, PhD, Adjunct Associate Professor of Epidemiology and Biostatistics
Introduction
The sebaceous gland, located within the dermis produces an oily material (sebum) that empties into the infundibulum of the hair follicle. A duct, lined by a squamous epithelium, is present between the gland and the hair follicle.
Sebaceous Adenoma
Definition: A benign tumor characterized by a preponderance of sebocytes (cells with intracytoplasmic lipid vacuoles) with few basaloid cells and ducts.
Sebaceous Ductal Adenoma
<Definition (SDA): A benign tumor characterized by a preponderance of ducts, and fewer sebocytes and basaloid cells.
Epidemiology
|
Sex |
N |
Percent |
|
Female |
733 |
17% (21%) |
|
Female Spayed |
1562 |
36% (33%) |
|
Male |
1090 |
25% (25%) |
|
Male Castrated |
949 |
22% (21%) |
|
( Normal Population %) |
|
|
|
Breeds at |
N |
Probability |
OR |
95% |
|
|
English Cocker Spaniel |
29 |
<0.0001 |
4.4 |
3.0 |
6.4 |
|
Cocker Spaniel |
632 |
<0.0001 |
3.9 |
3.5 |
4.2 |
|
Welsh Terrier |
7 |
0.0133 |
2.9 |
1.4 |
6.2 |
|
Husky |
158 |
<0.0001 |
2.6 |
2.2 |
3.1 |
|
Samoyed |
50 |
<0.0001 |
2.5 |
1.9 |
3.4 |
|
Cockapoo |
45 |
<0.0001 |
2.3 |
1.7 |
3.2 |
|
Cairn Terrier |
38 |
0.0003 |
1.9 |
1.4 |
2.6 |
|
West Highland White Terrier |
74 |
<0.0001 |
1.8 |
1.4 |
2.3 |
|
Miniature Poodle |
180 |
<0.0001 |
1.7 |
1.5 |
2.0 |
|
Toy Poodle |
28 |
0.0134 |
1.7 |
1.1 |
2.4 |
|
Dachshund |
88 |
0.0001 |
1.6 |
1.3 |
2.0 |
|
Brittany Spaniel |
33 |
0.0239 |
1.5 |
1.1 |
2.1 |
|
Shih Tzu |
87 |
0.0051 |
1.4 |
1.1 |
1.7 |
|
Standard Poodle |
69 |
0.0300 |
1.3 |
1.0 |
1.7 |
|
Labrador Retriever |
393 |
0.0101 |
1.1 |
1.0 |
1.3 |
|
Breeds at |
N |
Probability |
OR |
95% |
|
|
Golden Retriever |
226 |
<0.0001 |
0.71 |
0.62 |
0.81 |
|
English Springer Spaniel |
40 |
0.0002 |
0.58 |
0.42 |
0.79 |
|
Shetland Sheepdog |
35 |
<0.0001 |
0.41 |
0.30 |
0.58 |
|
Doberman |
47 |
<0.0001 |
0.38 |
0.29 |
0.51 |
|
Mastiff |
4 |
0.0409 |
0.38 |
0.14 |
1.01 |
|
Newfoundland |
3 |
0.0171 |
0.28 |
0.09 |
0.88 |
|
Pug |
5 |
0.0005 |
0.27 |
0.11 |
0.65 |
|
Boxer |
31 |
<0.0001 |
0.24 |
0.17 |
0.34 |
|
Weimeraner |
5 |
0.0001 |
0.24 |
0.10 |
0.57 |
|
Chow Chow |
4 |
0.0003 |
0.23 |
0.09 |
0.62 |
|
German Shepherd |
42 |
<0.0001 |
0.22 |
0.17 |
0.30 |
|
Greyhound |
3 |
0.0000 |
0.17 |
0.05 |
0.52 |
|
Rottweiler |
15 |
<0.0001 |
0.15 |
0.09 |
0.25 |
|
Saint Bernard |
1 |
0.0015 |
0.11 |
0.01 |
0.75 |
|
Rhodesian Ridgeback |
1 |
0.0004 |
0.09 |
0.01 |
0.62 |
|
Shar-Pei |
1 |
<0.0001 |
0.04 |
0.01 |
0.27 |
|
Sebaceous Adenoma & Ductal Adenoma Site |
Percent |
|
Head |
49.6% |
|
Forelimb |
12.1% |
|
Hindlimb |
11.0% |
|
Neck |
6.3% |
|
Multiple |
5.6% |
|
Thorax |
4.0% |
|
Back |
3.4% |
|
Abdomen |
3.2% |
|
Perineum |
2.5% |
|
Tail |
2.2% |
|
Scrotal |
0.1% |
