高清图集：常被误认为皮肤病的皮肤肿块
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atoAlthough most skin tumors encountered in veterinary patients are benign, malignant tumor types do occur. Becau many are erythematous and pruritic, they can be easily confud with commonly diagnod pruritic conditions (eg, scabies, allergic dia). The following tumors are commonly misdiagnod bad on their gross appearance.
虽然动物诊所中大多数皮肤肿瘤都是良性的，但是也确实可能会出现恶性肿瘤。因为很多皮肤肿瘤表现为发红瘙痒，很容易就会误诊为瘙痒性疾病（例如疥螨、过敏性疾病）。以下肿瘤根据它们的外观经常会被误诊。孽子孤臣
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FIGURE 1 Nodular baceous hyperplasia 皮脂腺结节状增生
Benign baceous gland tumor on the lateral thorax of a dog. Sebaceous gland tumors dev
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elop anywhere baceous glands are prent, but occur primarily on the limbs and trunk; they can cau discomfort if they become condarily infected. Sebaceous gland tumors are often obrved on canine skin and infrequently on feline skin. The tumors have a recognizable wart-like appearance, but unlike papillomatous skin lesions, do not have a known viral cau. Although most baceous gland tumors are classified as the nodular baceous hyperplasia type, other types of baceous gland tumors—including baceous epithelioma, baceous adenoma, and baceous adenocarcinoma—are differentiated by distinctive histologic features.
百度词典发音犬胸侧壁上的良性皮脂腺肿瘤。任何有皮脂腺的地方都可能长皮脂腺肿瘤，但是主要出现在四肢和躯干；如果继发感染可能会引起不适。犬皮肤上经常发现皮脂腺肿瘤，猫皮肤不常见。这样肿瘤呈疣状，但是跟乳头状瘤样皮肤病变不一样，没有已知的病毒原因。虽然大多数的皮脂腺肿瘤分类为皮脂腺结节状增生，其他类型的皮脂腺肿瘤，包括皮脂腺上皮瘤、皮脂腺腺瘤和皮脂腺腺癌，要通过组织学特点鉴定。
FIGURE 2 Cutaneous papilloma, ventral surface of tail 皮肤乳头状瘤，尾巴腹侧
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Solitary, raid, keratinized mass on the tail of a dog. This papilloma has an irregular fronded appearance and a whitish gray-to-yellowish color. Its location (the underside of the tail of a long-haired dog) is considered unusual for development of a cutaneous papilloma, which are more frequently encountered on the head or limbs of dogs. Becau of its similarity in clinical appearance to other neoplastic skin lesions, particularly squamous cell carcinoma (SCC), this lesion was surgically removed and submitted for histopathology for definitive diagnosis.
犬尾巴上的单个凸起角质化肿块。这个乳头状瘤从前面看形状不规则，呈白灰到黄色。位置（长毛犬尾巴腹侧）不是皮肤乳头状瘤的常见部位，乳头状瘤更常见于犬头部或四肢。因为外观与其他肿瘤性皮肤病变非常相似，尤其是鳞状细胞癌（SCC），手术切除该病变，送检组织病理学进行确诊。
FIGURE 3 Canine oral papilloma 犬口腔乳头状瘤
Grayish, shiny, solitary pedunculated mass originating from the lip margin of a young dog. Note the classic cauliflower appearance of this mass caud by a papillomavirus as com
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pared with the appearance of the tail mass shown in Figure 2. This benign skin tumor occurs frequently in young (ie, <2 years of age) dogs and usually spontaneously regress within a few months. Surgical excision may be necessary if multiple mass are prent. If lesions become ulcerated, surgical removal and histopathology should be considered to prevent transformation into SCCs. While considered uncommon, progression of papilloma to SCC can occur and has been previously reported.1
garden是什么意思一只年轻犬嘴唇边缘灰兮兮发亮的单个带蒂肿块。注意肿块典型的菜花样外观，由乳头状瘤病毒引起，可以与图2 中的尾巴肿块外观进行对比。这一良性的皮肤肿瘤常见于年轻犬（<2岁），通常在几个月内自行消退。如果存在多个肿块，可能需要手术切除。如果病变出现溃疡，应考虑手术切除和组织病理学检查，以免转变成鳞状细胞癌（SCC）。虽然不常见，但是乳头状瘤可能会发展成SCC，并且已有这样的报道。
FIGURE 4 Interdigital cyst 趾间囊肿
Dorsal (A) and plantar (B) appearance of a large keratinized interdigital cyst on the foot of a boxer. Especially important for successful treatment is recognizing that the problematic
cyst is located interdigitally on the plantar surface of the foot, whereas the connecting draining tract and much of the obrvable inflammation and subquent discomfort is prent on the dorsal aspect. Treating the draining tract without addressing the primary problem by completely removing the cyst from the plantar aspect of the foot could result in recurrence of clinical signs.
一只拳狮犬的一个大角质化趾间囊肿足背侧（A）和底侧（B）照片。成功治疗的关键是认识到造成问题的囊肿位于足底侧趾间，而引流窦道和可见的炎症以及随后的不适位于足背侧。如果只治疗背侧的窦道，而不完全切除足底侧的囊肿，会导致临床症状复发。
FIGURE 5 Feline squamous cell carcinoma in situ, Bowen dia 猫原位鳞状细胞癌，鲍温病
SCC in situ in a cat. SCCs are malignant cutaneous neoplasms routinely diagnod in dogs and cats. Lightly pigmented dogs and cats can develop neoplastic skin lesions resulting from ultraviolet light exposure. However, SCCs in situ (ie, Bowen dia) are less common in cats and develop regardless of ultraviolet light exposure. Note that this le
sion, located above the left eye, is plaque-like and pigmented, which is atypical of SCC neoplasms. Lesions consistent with tho of Bowen dia are multiple in number and frequently located on the head but can also be located on the skin of the neck, dorsal trunk, and limbs. As lesions progress, they can bleed easily with minimal manipulation.
一只猫的原位SCC。SCC是常见于犬猫的恶性皮肤肿瘤。浅色犬猫可能会因为暴露于紫外线而出现肿瘤性皮肤病变。然而，原位SCC（也就是鲍恩病）在猫中较少见，不管是否暴露于紫外线之下，都可能会出现。注意这个病变，位于左眼上方，呈斑块状且有色素沉着，是非典型性SCC肿瘤。符合鲍恩病的病变数量很多且常见于头部，但是也可能位于颈部、躯干背侧和四肢皮肤。随着病变发展，轻微触碰可能就很容易出血。
