基底细胞样毛囊错构瘤一例

正临床资料患者,女,51岁。主因右面部丘疹渐增大2年,于2015年9月16日就诊。患者于2013年夏季发现右侧面部出现一粟粒大小黑色丘疹,表面光滑,无明显自觉症状;皮损缓慢增大,中央呈淡黑色,边缘近肤色,无痒痛及破溃。患者否认有局部外伤史及特殊外用药史,家族中无类似疾病患者。体格检查:全身系统检查无明显异常。皮肤科情况:右侧面部可见一直径约1 cm的肤色斑块,斑块中央可见一约绿豆大     

线状痣样型基底细胞样毛囊错构瘤

报告1 例线状痣样型基底细胞样毛囊错构瘤.患者女,41 岁.左侧颈、背部丘疹20 余年,无自觉症状.皮损表现为数百个粟粒至黄豆大肤色或浅褐色丘疹,聚集成片,呈线状痣样排列,分布于左侧颈部及腰背部.皮损组织病理检查符合基底细胞样毛囊错构瘤.免疫组化:基质细胞波形蛋白(vimentin)、CD10、CD34 均阳性,基底样细胞S-100蛋白(-)、Bcl-2(-)、Ki-67 蛋白表达< 5%.     

基底细胞样毛囊错构瘤1例

患儿男,5岁。左上臂外侧泛发棕色丘疹3年。皮肤科情况:左上臂外侧不规则分布棕色丘疹,中等硬度。皮损组织病理示:真皮内基底样小细胞呈条索状交互吻合,嵌于疏松的纤维性基质内,团块细胞周边呈明显的栅栏状。诊断:基底细胞样毛囊错构瘤。     

基底细胞样毛囊错构瘤并发粟丘疹

报告1例基底细胞样毛囊错构瘤.患者男,18岁.出生时即发现左侧颈部有一斑片,形态不规则,不痛不痒,境界清楚,较周围肤色浅,其上有丘疹和结节.皮损组织病理检查:真皮内基底样细胞呈条索状吻合,嵌于疏松基质内,其间有鳞状上皮细胞,细胞无异形性,未见有丝分裂象;免疫组化染色示Bcl-2(-),Ki-67(-),基质CD34(+).诊断:先天性局限型基底细胞样毛囊错构瘤.     

表现为浅表脂肪瘤样痣的毛囊皮脂腺囊性错构瘤1例

患者女,36岁。颈部丘疹30余年。颈部可见密集呈片状分布的皮色圆顶丘疹,约绿豆大小,质韧。皮损组织病理示:角化过度,表皮大致正常,真皮内可见多数大的分化成熟的皮脂腺体,开口于毛囊漏斗部,腺体周围间质有裂隙,真皮内胶原增生致密。诊断:毛囊皮脂腺囊性错构瘤。     

毛囊皮脂腺囊性错构瘤1例

<正>1病历资料患者女,43岁。因左侧面颊丘疹3年,于2019年3月12日至我科就诊。患者3年前发现左侧面颊出现一黄豆大丘疹,无自觉症状,未予诊治。发病前无虫咬伤、外伤及肿瘤病史,家族中无类似疾病的患者。     

息肉样基底细胞癌

报告1例息肉样基底细胞癌.患者女,77岁.右腋下赘生物25年,变红伴疼痛1年.皮肤科检查:右侧腋下可见蚕豆大暗红色息肉样半球形赘生物.皮损组织病理检查:表皮增生肥厚,部分区域向下增生,形成条索状及块状肿瘤细胞团块,肿瘤细胞团块由基底样细胞组成,细胞核大深染,可见核分裂象,部分边缘呈栅栏状排列,可见收缩间隙;真皮内可见间...     

毛囊混合细胞在胶原/壳聚糖多孔支架上重建毛囊样结构

目的探讨利用毛囊混合细胞植入胶原／壳聚糖多孔支架内体外重建毛囊的可行性。方法用滴加法或注射法将体外培养的C57BL／6J近交系乳鼠背部皮肤毛囊混合细胞以不同传代数、不同细胞密度接种至胶原／壳聚糖多孔支架，倒置显微镜下观察支架表面或浅层的细胞生长或毛囊形成情况。将支架经10％甲醛固定后行组织学观察（H-E染色）。另用共聚焦激光扫描显微镜观察支架内活细胞的生长以及毛囊样结构的形成。结果在一定传代次数和细胞密度下，在支架内可形成具有毛干的毛囊样结构。激光共聚焦扫描显微镜发现团块内细胞排列呈同心圆状，整个三维结构似一长颈花瓶，且该结构仅见于注射法接种细胞的支架内。结论毛囊混合细胞植入胶原／壳聚糖多孔支架内体外可形成具有毛干的毛囊样结构。     

痣样基底细胞癌综合征

报告1例痣样基底细胞癌综合征.患者女,45岁.左足背无痛性红斑4个月余.皮肤科检查:左足背一3 cm×4 cm红色斑块,表面糜烂、结痴.左耳后一黄豆大暗红色丘疹,质地软.左胴窝一直径0.5 cm的淡红色斑片.双掌、跖部可见密集针尖大点状凹陷.皮损组织病理检查示基底细胞癌.诊断:痣样基底细胞癌综合征.     

巨大毛囊皮脂腺囊性错构瘤

报告1例巨大毛囊皮脂腺囊性错构瘤。患者男,29岁,左眼眶外侧及颞部出现红色丘疹20年,增大为结节和斑块8年。皮肤科检查:左眼眶外侧暗红色结节,部分与额部暗红色斑块相连,结节和斑块表面见多处凹陷,质地软,无触痛,无内容物挤出。左眼眶外侧结节组织病理检查:真皮中部可见多个畸形的毛囊结构,毛囊漏斗部扩张,与增生的皮脂腺小叶相连,周围有增生硬化的胶原,真皮浅中层可见增生的毛细血管。诊断:巨大毛囊皮脂腺囊性错构瘤。     

Congenital non-familial unilateral basaloid follicular hamartoma

Basaloid follicular hamartoma is not a well-recognized clinical entity and has often been diagnosed as trichoepithelioma or basal cell carcinoma. It is a unique benign follicular tumour which comprises a variety of clinical manifestations. We present the case of a 24-year-old male with unilateral basaloid follicular hamartoma present at birth and later misdiagnosed as basal cell carcinoma. Histological features of basaloid follicular hamartoma are not always diagnostic and clinico-pathological correlation is particularly important to distinguish this benign hamartoma from other basaloid tumours including basal cell carcinoma. Continuous follow-up of our patient did not reveal any clinical or histological malignant transformation.     

Localized basaloid follicular hamartoma.

We report a 39-year-old Japanese woman with a 30 x 10 mm, skin-colored, soft, hairless, irregularly elevated plaque in the left retroauricular area. Histologically, it consistently showed features of atypical hair follicles; some showed immaturely developed basaloid epithelial islands invaginated with condensed stromal cells, and others were replaced or associated with solid strands, branching cords, or lace-like networks of undifferentiated basaloid cells. Although the clinical appearance of a typical localized basaloid follicular hamartoma is a plaque of alopecia, this case seems to be a variant, because the histological findings are so characteristic of the entity. The relationship of basaloid follicular hamartoma to other hair-follicle derived tumors is also considered.     

Multiple basaloid follicular hamartomas associated with acrochordons,seborrhoeic keratoses and chondrosarcoma

Basaloid follicular hamartoma is an uncommon neoplasm with distinctive histopathological findings. It presents as four distinctive clinical forms: a solitary papule, a localized plaque of alopecia, a localized linear and unilateral type, and generalized papules with associated alopecia and myasthenia gravis. Histologically, basaloid follicular hamartomas are characterized by thin branching strands and thick cords of basaloid or squamoid cells extending from a follicle into a loose, fibrillar, fibrocytic or mucinous connective tissue stroma. We report a case of long-standing, generalized basaloid follicular hamartomas associated with acrochordons, seborrhoeic keratoses, and a history of chondrosarcoma. In general, solitary tumours are sporadic; multiple tumours are inherited and frequently associated with a syndrome. Further surveillance is warranted to determine if the association of multiple basaloid follicular hamartomas and chondrosarcoma constitutes an inherited syndrome.     

Congenital systematized basaloid follicular hamartoma with microphthalmia and hemimegalencephaly

The lines of Blaschko are a cutaneous pattern of mosaicism present in a variety of skin disorders. Developmental abnormalities affecting other tissues derived from the embryonic ectoderm and mesoderm are sometimes associated. Here, we describe a 5-year-old boy with basaloid follicular hamartoma affecting the left side of the body in linear multiple bands, following Blaschko lines. Lesions were predominantly hypopigmented macules and streaks, but among these, we could observe brownish atrophic patches and brown papules. Furthermore, ipsilateral hemimegaloencephaly and microphthalmia were present. These findings suggest a neurocutaneous condition recently described by Happle and Tinschert. Its nosologic classification will be discussed.     

Hereditary basaloid follicular hamartoma syndrome

Basaloid follicular hamartoma syndrome (BFHS) is a rare adnexal tumor genodermatosis. We present a case of hereditary BFHS and review the literature concerning the clinical and histologic features of this entity.