Faecal Occult Blood Test

Case of the Month (Emma Scurrell February 2012)

Cutaneous angiomatosis in a dog 

The following are H&E sections of a solitary ulcerated cutaneous mass surgically resected from the neck of a 1-year-old male Labrador Retriever.

 Fig 1.  Low power magnification of the excised skin mass. Infiltrating the dermis are numerous vascular structures which are either small and resemble capillaries (black circle) or consist of larger, disorganised arterial structures (black arrows).

Fig 2. Closer view of the proliferating capillary-like structures (V= vessel lumen).


Fig 3. Closer view of the proliferating arterial-like structures (V= vessel lumen) which are found within the deeper dermis.  

Final Diagnosis

Cutaneous angiomatosis


Angiomatosis is an umbrella term used to denote various vasoproliferative lesions including vascular malformations and hyperplasia. The majority of dogs affected are young although lesions can also occur in adult/older dogs. Despite the bland cellular appearance of these lesions, they are typically locally infiltrative and progressive. Although any site can be affected, lesions most commonly occur on the feet and are often associated with bony destruction. Metastasis has not been reported however incomplete excision will result in local recurrence and additional lesions can occur.

Previous Monthly Cases

Hypertensive Retinopathy January 2010
FIP in a cat - uncommon presentation February 2010
Phaeohyphomycosis    March 2010 
Scleral Rupture April 2010
Canine and feline epulides May 2010
Erythema multiforme in a labrador retreiver June 2010
Keloidal fibrosarcoma in a labrador retreiver July 2010
Cutaneous epitheliotropic lymphoma  August 2010 
Benign cutaneous histiocytoma  September 2010 
Iridociliary adenoma October 2010
Proliferative thrombovascular necrosis of the pinnae November 2010
Signet-ring cell carcinoma in the stomach of a dog December 2010
Cutaneous infiltrative lipoma in a labrador January 2011

Tonsillar squamous cell carcinoma February 2011
Canine orbital meningioma March 2011
"Lung-digit" syndrome in a cat April 2011
Hepatic amyloidosis in a cat May 2011
Haemophagocytic histiocytic sarcoma June 2011
Alternaria spp. infection in an immunocompromised dog July 2011
Ocular manifestation of lymphoma in a cat  August 2011
Kerion dermatophytosis in a Cocker spaniel September 2011
Subcuticular coenurus in a rabbit  October 2011
Optic nerve glioma in a dog November 2011
Malignant transformation of a viral papilloma in a dog  December 2011
Uveodermatological syndrome in an Akita
January 2012

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Faecal Occult Blood Test