{"id":10009,"date":"2023-04-03T02:47:38","date_gmt":"2023-04-03T07:47:38","guid":{"rendered":"http:\/\/lafeber.com\/staging\/vet\/?p=10009"},"modified":"2026-05-21T12:17:52","modified_gmt":"2026-05-21T17:17:52","slug":"lymphoma-in-the-ferret-an-overview-of-diagnosis-and-treatment","status":"publish","type":"post","link":"https:\/\/lafeber.com\/vet\/lymphoma-in-the-ferret-an-overview-of-diagnosis-and-treatment\/","title":{"rendered":"Lymphoma in the Ferret: An Overview of Diagnosis and Treatment"},"content":{"rendered":"

Introduction<\/h2>\n

Hemolymphatic tumors are the third most common neoplasm in ferrets<\/a> (Mustela putorius furo<\/em>), with lymphoma representing from 8.6% to 19.3% of ferret neoplasms in retrospective studies.1-4<\/sup> Unlike humans and some domestic animals, causative genetic mutations and infectious or environmental triggers have not been identified as risk factors for lymphoma in ferrets. A viral origin has been speculated in a few research studies, and an association between Helicobacter<\/em> infection<\/a> and gastric lymphoma has been suggested.2,5<\/sup>,25<\/sup><\/p>\n

Ferrets of any age or sex can be affected, with lymphoma described in patients as young as 2 months.2<\/sup> A recent retrospective found 5 years as the median age of diagnosis in ferrets treated for lymphoma, and was the same for small, intermediate, and large cell lymphomas.6<\/sup> In this same study, the incidence of lymphoma seemed to decrease throughout the 18-year study period, with more than half the cases occurring during the first 5 years (1998-2003).6<\/sup><\/p>\n

 <\/p>\n

Clinical forms of lymphoma<\/h2>\n

Historically, two forms of disease were described: \u00a0a lymphoblastic form seen in young ferrets, less than 1 year of age, and a slow, progressive lymphocytic form, seen in ferrets older than 3 years. However, this age-related trend was not demonstrated in later case series.2, 5<\/sup><\/p>\n

Clinical forms of lymphoma are currently based on localization of the neoplastic infiltrates.5<\/sup> Although any organ may be involved, lymphoma is most commonly found in lymph nodes (23% to 44%), spleen (17% to 20%), liver (23%) and\/or gastrointestinal (GI) tract (14% to 45%) (Figs 1-4). Multicentric forms represented 11% to 40% of cases.1, 3, 7<\/sup><\/p>\n

\"Mesenteric<\/a>

Figure 1a.<\/strong> Gross appearance of lymphoma involving mesenteric lymph nodes (arrows) in a ferret (Mustela putorius furo<\/em>). Photograph provided by Dr. Peter Fisher<\/a>. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

\"Lymphoma<\/a>

Figure 1b.<\/strong> Closer view of mesenteric lymph nodes (arrows) shown in Figure 1a. Photograph provided by Dr. Peter Fisher<\/a>. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

\"Gross<\/a>

Figure 2a<\/strong>. Gross appearance of splenic lymphoma in a ferret (Mustela putorius furo<\/em>). Photograph provided by Dr. Ruth Boll. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

\"Cut<\/a>

Figure 2b.<\/strong> Cut surface of the spleen shown in Figure 2a. Photograph provided by Dr. Ruth Boll. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

\"Metastatic<\/a>

Figure 3<\/strong>. Gross appearance of metastatic lymphoma involving the liver in a ferret (Mustela putorius furo<\/em>). Photograph provided by Dr. Peter Fisher<\/a>. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

\"Ocular<\/a>

Figure 4.<\/strong> Ocular lymphoma in a ferret (Mustela putorius furo<\/em>) causing prolapse of the lacrimal gland. Photograph provided by Dr. Peter Fisher<\/a>. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

Ferrets with lymphoma have no specific clinical presentation, as clinical signs depend on the organ(s) involved. Patients may present with lethargy, anorexia, weakness, cutaneous masses or lesions, GI disorders, respiratory or cardiac signs, or neurologic deficits.2, 8, 9<\/sup> Common abnormalities found during physical examination<\/a> include abdominal mass(es), usually due to splenomegaly and\/or lymphadenomegaly, and peripheral lymphadenomegaly (Fig 5).2<\/sup> Lymphoma can also be an incidental finding in apparently healthy ferrets.<\/p>\n

\"Profound<\/a>

Figure 5.<\/strong> Profound splenomegaly in a ferret (Mustela putorius furo<\/em>). Photograph provided by Dr. Ruth Boll. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

Although quite rare, cutaneous lymphoma can also be encountered (1% of cutaneous lesions and 5% to 7% of lymphoma cases depending on the study).1,3,5,7,10<\/sup> Cutaneous epitheliotropic lymphoma commonly causes swollen, hyperemic, alopecic lesions on the feet or limbs, however lesions may also appear over the lumbar spine or even in a more diffuse, generalized pattern (Fig 6).27<\/sup> These lesions tend to grow in size and multiple lesions will develop if left untreated.2, 10<\/sup><\/p>\n

\"Cutaneous<\/a>

Figure 6.<\/strong> Cutaneous lymphoma involving the foot in a ferret (Mustela putorius furo<\/em>). Photograph provided by Dr. V\u00e9ronique Mentr\u00e9’. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

\"Cutaneous<\/a>

Figure 7.<\/strong> Cutaneous lymphoma involving the dorsal lumbar region in a ferret (Mustela putorius furo<\/em>). Photograph provided by Dr. V\u00e9ronique Mentr\u00e9’. Click image to enlarge.<\/em><\/small><\/p><\/div>\n

 <\/p>\n

Diagnosis<\/h2>\n

Lymphoma is considered \u201cthe great impersonator\u201d:\u00a0 it can look like almost any disease \u2013 and should always be kept on the differential list until a definitive diagnosis<\/a> is reached (Table 1).<\/p>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t
Table 1. Important differential diagnoses for lymphoma in the ferret.<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Form of lymphoma<\/strong><\/td>Differential diagnoses<\/strong><\/td>\n<\/tr>\n
Gastrointestinal<\/td>Other chronic gastrointestinal diseases<\/a>
\n including:

\nEnzootic catarrhal enteritis (ferret enteric coronavirus)

\nGastrointestinal foreign body

\nHelicobacter mustelae<\/em><\/a> infection

\nInflammatory bowel disease

\nIntussusception

\nOther gastrointestinal tumors <\/td>\n<\/tr>\n
Mediastinal<\/td>Chylothorax

\nCongestive heart failure<\/a>

\nDilated cardiomyopathy<\/a>

\nHemothorax

\nOther mediastinal tumors (thymoma, lipoma)<\/td>\n<\/tr>\n
Cutaneous<\/td>Chronic inflammatory dermatitis

\nMast cell tumor or other cutaneous tumors<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

 <\/p>\n

A minimum database is necessary to ensure an accurate diagnosis and to properly stage lymphoma. This database should include blood work<\/a> and imaging.<\/p>\n