临沧市佤族136例脂溢性角化病的临床病理分析

目的探讨临沧市佤族脂溢性角化病的临床和组织病理学特点。方法回顾性分析我院136例脂溢性角化病的临床表现及组织病理学资料。结果 136例脂溢性角化病患者病理分型主要为棘层肥厚型占44%、角化过度型占30%。患者男女比例为1.61∶1,发病年龄50岁以上占84.5%,头面颈部等暴光部位占发病部位的71.5%。结论年龄和日光照射可能是临沧市脂溢性角化病的重要致病因素。临床上典型的脂溢性角化病不难诊断,不典型者容易与日光性角化病、黑色素瘤、扁平疣等相混淆,临床表现与组织病理的结合有助于降低误诊率。     

153例脂溢性角化病的临床与病理分析

回顾性分析我科近4年诊断为脂溢性角化病153例的临床及组织病理学情况。病理诊断主要是棘层肥厚型、角化过度型、棘层肥厚型和角化过度型的混合型、腺样型、刺激型、菌落型与黑素棘皮瘤型。该病临床诊断与组织病理之间有一定的差异性,本组临床诊断为脂溢性角化病的115例中,组织病理符合91例,临床误诊率为20.9%;病理诊断为脂溢性角化病的153例中临床误诊62例。应注意与相关疾病鉴别,日光对脂溢性角化病的形成及其发病年龄提前有一定影响。     

110例脂溢性角化病的临床与病理分析

脂溢性角化病是一种临床上常见的良性表皮角质形成细胞肿瘤,为探讨其临床和病理特点,我们对110例脂溢性角化病的临床及病理资料进行回顾性分析,结果显示:(1)24.54%脂溢性角化病发生于中青年及以下年龄段。(2)多发生于头、面、颈等暴露部位,并以棘层肥厚型和角化过度型为主。(3)其临床与组织病理的诊断符合率仅为70.91%。(4)临床上极易将其误诊为色素痣等其他皮肤病。     

皮肤镜诊断脂溢性角化病的临床研究

目的:探讨皮肤镜在诊断脂溢性角化病中的价值。方法:选择120例临床拟诊为脂溢性角化病患者,由两名医生参照脂溢性角化病皮肤镜特点,盲法独立诊断,再以病理诊断为金标准,比较皮肤镜在诊断脂溢性角化病的灵敏度和特异度及与病理诊断的一致性。结果:120例患者中,86例经组织病理学诊断为脂溢性角化病;80例经医生A皮肤镜诊断为脂溢性角化病,82例经医生B皮肤镜诊断为脂溢性角化病。与组织病理诊断比较,医生A皮肤镜诊断脂溢性角化病的一致百分率、灵敏度、特异度、误诊率、漏诊率、Youden指数、Kappa值分别是91.67%、90.70%、94.12%、5.89%、9.30%、0.848、0.805,医生B诊断的上述各项值分别为93.33%、93.02%、94.12%、5.88%、6.98%、0.871、0.841。两名医生经皮肤镜诊断脂溢性角化病的水平经卡方检验无明显差异(2=0.08,P>0.05)。结论:脂溢性角化病皮肤镜诊断结果与组织病理学检查结果有较好的一致性,具有重要的诊断价值。     

脂溢性角化病231例临床及病理分析

脂溢性角化病是一种常见病，但临床上易与多种疾病相混淆，通过对西京医院皮肤科门诊1990年－2000年252例脂溢性角化病的临床及病理资料进行回顾分析，发现脂溢性角化病临床和病理诊断符合率仅为69．44％，结果显示：（1）脂溢性角化病可发生于任何年龄；（2）黑色丘疹性皮病不应看作独立疾病，而是早期发生的脂溢性角化病。     

脂溢性角化病148例临床与组织病理分析

目的:探讨脂溢性角化病的临床特点及组织病理特征.方法:回顾性分析148例脂溢性角化病患者的临床表现及组织病理特征.结果:①男女患病比例为1∶1.08,发病年龄23～89岁,病程2个月～30年;②头、面部为好发部位,51～70岁患者最为多见;③皮损单发性37例,皮损多发性111例,皮损直径1～30 mm,大多表现为圆形或...     

光线性角化病385例临床与组织病理特点回顾性分析

目的:总结光线性角化病的临床、组织病理特点,提高本病的诊断率。方法 :对西京医院皮肤科门诊2008年1月—2013年1月间694例临床诊断为光线性角化病的患者资料进行临床与组织病理回顾性分析。结果:光线性角化病临床与病理诊断符合率仅为21.18%。临床最易误诊为脂溢性角化病,而且,组织病理上也易与脂溢性角化病相混淆。结论:光线性角化病虽然临床常见、多发,但不易正确诊断,临床医生需要提高对光线性角化病临床、组织病理特点的认识。     

脂溢性角化病皮损Survivin表达的免疫组化观察

目的观察脂溢性角化症的各病理分型对Survivin染色的表达情况。方法脂溢性角化症患者63例,组织病理分型,免疫组化ABC法进行Sunrivin染色观察。结果脂溢性角化症的各病理分型染色结果显示①棘层肥厚型14/21例阳性,7/21例弱阳性;②角化过度型:16/20例染色阳性,4/20例显示较弱染色;③腺样型:9/13例染色阳性,4/13弱染色;④刺激型:1/9例弱染色,其余染色阴性。结论脂溢性角化病普遍表达Survivin,提示其发病可能与凋亡抑制相关。     

脂溢性角化病96例和日光性角化病28例临床与病理分析

目的观察脂溢性角化病(SK)与日光性角化病(AK)的临床及病理差异。方法回顾性分析本科门诊2006年1月-2011年7月经病理确诊的96例SK和28例AK患者的临床及病理资料,对数据用Excel整理与分析。结果①SK好发于中老年人,而AK好发于老年人;②SK皮损好发于头面、躯干及四肢,而AK好发于头、面和颈等光暴露部位;③组织病理:SK以角化型和棘层肥厚型为主,而AK以原位癌型和萎缩型为主;④SK临床与组织病理的诊断符合率为70.83%,而AK临床与组织病理的诊断符合率仅为46.43%,临床上易将AK误诊为SK。结论 AK发病晚于SK,临床上AK误诊率高于SK,两者鉴别诊断主要依赖组织病理。     

EGF、EGFr在脂溢性角化病组织中的表达

为探讨以皮肤衰老为特征之一的脂溢性角化病（seborrheic keratosis,SK)病变组织中角质形成细胞成熟迟缓的发病机理,采用免疫组织化学二步法对32例脂溢性角化病皮损组织及作对照的10名正常皮肤组织石蜡标本中表皮生长因子（EGF）及其受体（EGFr)进行检测。结果SK组的EGF和EGFr在阳性表达强度上均高于正常对照组（P＜0．01）,EGFr在脂溢性角化病皮损角质层,颗粒层和棘细胞上层中有广泛的表达,并且棘层肥厚伴角化过度或乳头状瘤样增殖者表达呈强阳性。提示EGF和EGFr的这种异常或超表达可能与脂溢性角化病角质形成细胞的过度增殖的发生有一定的关系。     

光线性角化病159例与皮肤鳞状细胞癌51例临床病理特征分析

目的了解滇东地区光线性角化病与鳞状细胞癌的疾病构成比、一般情况和临床病理特征。方法采用回顾性研究方法对曲靖市第一人民医院皮肤科2014年1月-2018年12月共5年行病理检查确诊的光线性角化病和皮肤鳞状细胞癌患者的临床和病理检查资料进行分析。结果159例光线性角化病(AK)与51例(SCC)鳞状细胞癌患者中女性多于男性,光线性角化病和鳞状细胞癌的发病平均年龄分别为(66.32±14.63)岁和(65.00±16.26)岁。光线性角化病和鳞状细胞癌患者皮损发生于曝光部位的分别占98.11%和78.43%。51例鳞状细胞癌患者中,有3例均是光线性角化病继发鳞状细胞癌,均为女性,年龄均>70岁,发病部位均为曝光部位。5年确诊光线性角化病患者占总病检患者的构成比相对稳定,其中鳞状细胞癌有所波动。AK病理分型分为肥厚型98例(61.64%)、萎缩型26例(16.35%)、棘层松解型12例(7.55%)、色素型9例(5.66%)、苔藓样型9例(5.66%)、鲍温样型5例(3.14%);SCC病理分级Ⅰ级39例(76.47%)、Ⅱ级11例(21.57%)、Ⅲ级1例(1.96%)、Ⅳ级0例。光线性角化病与鳞状细胞癌中临床诊断与病理诊断符合率分别为61.00%和56.86%,易被误诊为其他疾病。结论滇东地区光线性角化病与鳞状细胞癌以中老年女性为主,主要位于头面颈部等曝光部位,与紫外线关系密切,其中发生于曝光部位、皮损多样、病程长的老年女性光线性角化病患者易继发鳞状细胞癌,但临床病理诊断符合率较低,需引起重视。     

Clinical and pathological study of lichen-planus-like keratosis in China

Lichen-planus-like keratosis is usually diagnosed pathologically; rarely, a definitive diagnosis can be made grossly in the clinic. Only a few cases of lichen-planus-like keratosis have been reported in China. The purpose of this study was to investigate the clinical and pathological features of lichen-planus-like keratosis in China. Fifty cases of lichen-planus-like keratosis patients diagnosed pathologically during a 5-year period in our clinic were analyzed. Clinical features were recorded. Sectioned specimens were subjected to hematoxylin and eosin staining to observe pathological changes. Results showed that there were 34 males and 16 females (ratio 2:1) with an average age of 61.2 years. Most of the lesions were single papules or plaques with rough surfaces. They were distributed on the face, larger than 1 cm, and dark red to brown in color. Only one case (2%) was considered to be lichen-planus-like keratosis clinically. By hematoxylin and eosin staining, solar lentigo and solar elastosis could be found in 68% and 32% of lichen-planus-like keratosis lesions, respectively. Eosinophil (42%) and plasma cell (36%) infiltration was also found frequently. Exoerythrocytes could be detected in 50% of the cases. Lichen-planus-like keratosis is not uncommon in clinical practice in China, the diagnosis of lichen-planus-like keratosis should be made by a combination of clinical manifestations and pathological changes. It is better to classify lichen-planus-like keratosis as a benign skin tumor. More attention should be paid to lichen-planus-like keratosis in China.     

Lichenoid keratosis is frequently misdiagnosed as basal cell carcinoma

Lichenoid keratosis (LK), also known as benign lichenoid keratosis or lichen planus‐like keratosis, is a solitary, pink to red‐brown scaly plaque representing a host immunological response to a variety of precursor lesions. LK is often misdiagnosed as a dermatological malignancy owing to its clinical resemblance to basal cell carcinoma (BCC) or Bowen disease. We performed a retrospective analysis of the pathology records of a series of LK lesions with reference to the demographic features and accuracy of clinical diagnosis. The pathology records from 2008 to 2009 of 263 consecutive patients with a histological diagnosis of LK from a specialized skin laboratory were retrieved. Data relating to clinical diagnosis, age, sex, anatomical location, time of year of presentation and any coexistent pathological lesions adjacent to the LK were recorded. Mean age at presentation was 64 years (range 34–96), and 58% of patients were female. The most common anatomical site was the chest/anterior torso, followed by the back and legs. The most common coexisting lesion was solar keratosis at 14%, followed by seborrhoeic keratosis (SK) at 7.8%. The correct clinical diagnosis of LK was made in 29.5% of cases. The most common clinical diagnosis was BCC (47%), while SK was the preferred diagnosis in 18%. A clinical diagnosis was not given in 5.5% of cases. In conclusion, it appears that LK is frequently misdiagnosed, with misdiagnosis occurring in > 70% of cases in this study.     

Prevalence of melanoma clinically resembling seborrheic keratosis: analysis of 9204 cases

OBJECTIVE: To estimate the prevalence of melanoma clinically mimicking seborrheic keratosis. DESIGN: Retrospective review of cases submitted for histological examination with a clinical diagnosis of seborrheic keratosis or with a differential diagnosis that included seborrheic keratosis. SETTING: A tertiary medical care center-based dermatopathology laboratory serving academic dermatology clinics that have a busy pigmented lesion clinic. MATERIALS AND METHODS: A total of 9204 consecutive pathology reports containing a diagnosis of seborrheic keratosis in the clinical information field were identified between the years 1992 and 2001 through a computer database search. Reports with a final histological diagnosis of melanoma were selected for further review and clinicopathological analysis. MAIN OUTCOME MEASURE: Histological diagnosis, which was correlated with the preoperative clinical diagnosis. RESULTS: Melanoma was identified in 61 cases (0.66%) submitted for histological examination with a clinical diagnosis that included seborrheic keratosis. Melanoma was in the clinical differential diagnosis of 31 cases (51%). The remaining lesions had a differential diagnosis of seborrheic keratosis vs melanocytic nevus (17 cases, 28%), basal cell carcinoma (7 cases, 12%), or a squamous proliferation (3 cases, 5%). In 3 cases (5%), seborrheic keratosis was the only clinical diagnosis. All histological types of melanoma were represented. CONCLUSIONS: Our results confirm that melanoma can mimic seborrheic keratosis. These data strongly support the current policy of submitting for histological examination all specimens that have been removed from patients.     

Benign lichenoid keratosis: a clinical and pathologic reappraisal of 1040 cases

Benign lichenoid keratosis, otherwise known as lichen planus-like keratosis, is a common, cutaneous entity that is often confused with cutaneous malignancy. Few studies have examined the multiple clinical and pathologic guises of this entity, particularly within the context of clinical pathologic correlation or magnitude of this study. We examined the epidemiologic, clinical, and pathologic attributes of 1040 consecutive cases of benign lichenoid keratosis referred for pathologic examination at a busy laboratory over an entire year. Clinical parameters assessed included the age, anatomic location, gender, and multiplicity of the lesions. Pathologic attributes were assessed yielding discernment of five different subtypes that included a classic type, bullous type, atypical type with cytologically atypical lymphocytes, an early or interface type, and a late regressed or atrophic type. The results yielded an average age at presentation of 59.5 years with an age range of 36 to 87 years. The gender frequency was 76% female, 24% male. The trunk was the most common location (76%), followed by the extremities (33%) and head and neck (7%); 8% of patients presented with two lesions and less than 1% with three lesions prompting consideration of lichen planus. The classic, atypical, and bullous forms of the disease clinically presented with erythematous papule/plaque(s). The early or interface type showed erythematous to hyperpigmented brown macules and the regressed or atrophic type presented as violaceous papules or irregularly distributed macular pigmentation; 81% of the lesions showed the classic histology consisting of epidermal acanthosis with a band-like lichenoid lymphocytic infiltrate. Variable numbers of plasma cells, eosinophils, and neutrophils were identified as well as epidermal parakeratosis distinguishing these lesions from typical lichen planus. The bullous variant showed intraepidermal or subepidermal bullous cavities with a dense associated lymphocytic infiltrate and increased numbers of necrotic basilar layer keratinocytes. The atypical variant showed features of the classic type with scattered enlarged CD-3, CD-30 (+) lymphocytes possessing hyperchromatic, irregular nuclei. The early interface type showed single lymphocytes aligned along the dermoepidermal junction without epidermal acanthosis and adjacent lentigo. The regressed or atrophic variant showed epidermal atrophy with papillary dermal scarring, patchy lymphocytic infiltrates and melanin incontinence. The clinicopathologic spectrum of benign lichenoid keratosis is broad and encompasses several unrelated entities. An awareness of its expanded presentation is essential to avoid misdiagnosis and may serve as an important forerunner of pathogenic discernment.     

Diagnostic utility of dermoscopy in pigmented actinic keratosis

The diagnosis of pigmented actinic keratosis can be complicated in clinical practice. The differential diagnosis with lentigo maligna melanoma can be difficult due to common clinical and dermoscopic characteristics. We present 5 cases of pigmented actinic keratosis in 4 patients. The most common dermoscopic finding was a grayish-brown granulation with a perifollicular distribution, present in all lesions, followed by rhomboidal structures in 4 cases, and an annular-granular pattern in 3. In no case were asymmetrical pigmented follicular openings observed. We draw attention to key findings that aid preoperative diagnosis of pigmented actinic keratosis.     

Seborrhoeic keratoses with associated lesions: a retrospective analysis of 85 lesions

Seborrhoeic keratoses are benign epidermal neoplasms that are rarely associated with other skin lesions especially malignancies. In this study, the aim was to assess the incidence of associated lesions occurring either adjacent to or contiguous with a seborrhoeic keratosis. A retrospective case series over a 12-month period was carried out. In total, 639 consecutive histologically diagnosed seborrhoeic keratoses were identified, of which 85 (9%) were found to be associated with other lesions. Of these associated lesions, 44 (7%) were malignant, with four of these found to be arising within the seborrhoeic keratosis. These associated lesions included premalignant lesions, malignancies, melanocytic lesions and miscellaneous lesions. Men (59%) were affected more commonly than women. The average age was 74 years (range 33-98 years). Seborrhoeic keratoses associated with other lesions were found most commonly on the head and neck. The incidence of associated lesions, in particular malignancy arising within seborrhoeic keratoses may be higher than previously thought. This may be an incidental phenomenon, or seborrhoeic keratosis could represent a precursor lesion. Therefore, seborrhoeic keratoses that have undergone recent clinical change should be considered for biopsy and histological examination.     

Pigmented seborrheic keratoses of the vulva clinically mimicking a malignant melanoma: a clinical, dermoscopic-pathologic case study

The diagnosis of seborrheic keratosis is, in general, a clinical one, but in some cases, the differential diagnosis between pigmented seborrheic keratosis and malignant melanoma is difficult. Dermoscopy may improve the early diagnosis of vulvar melanoma and thus play a role in the preoperative classification of pigmented lesions at this particular site. We report the first case of a pigmented seborrheic keratosis of the vulva clinically mimicking a malignant melanoma, whose dermoscopic features have been investigated together with their pathologic correlates. Dermoscopically our case shows the absence of comedo-like openings and the presence of the pseudo-network. Dermoscopy is therefore a useful method for the differential diagnosis of pigmented lesions even in the vulva.