外科病理学实践:诊断过程的初学者指南 | 第4章 复杂上皮的解读
Type of epithelium: Is it squamous, columnar, ciliated?
上皮类型:鳞状、柱状、纤毛状?
Architecture: Is it an exophytic structure, such as a verrucous lesion or a papilloma? Is there downward growth, as in an inverted papilloma or invasive lesion?
结构:是外生结构吗?如疣状病变或乳头状瘤?有向下生长吗?如内翻性乳头状瘤或浸润性病变?
Keratinization: Is keratinization present or absent? Hyperkeratosis? Parakeratosis? Mounds or church spires of keratin (as in a wart)?
角化:有无角化?角化过度?角化不全?角化物形成的丘或教堂尖顶(如疣)?
Thickness of the epithelium: Is the epithelium thickened and irregular (acanthotic) or thin and flat (atrophic)? A markedly thickened epithelium may indicate irritation and hyperplasia but not necessarily dysplasia.
上皮厚度:上皮是增厚且不规则(棘皮症或棘层肥厚)?还是薄而扁平(萎缩)?上皮明显增厚可能表明刺激和增生,但不一定是异型增生。
Architectural orderliness: Is there a clear difference between the basal layer and the superficial layer? Are the rows of cells orderly (Figure 4.1)? Are the nuclei lined up, either parallel to the surface or perpendicular to it?
结构规则有序:底层和表层之间有明显的区别吗?每行细胞是否排列有序(图4.1)?核是否排列成行,是平行于表面还是垂直于表面排列的?
General color: What color is it? Although it is hard to compare one slide to another, within a single slide differences in color can make a dysplastic or inflamed area stand out as dark or blue. Islands of bright pink, on the other hand, may indicate deep keratinization, which is a feature of invasion.
一般颜色:什么颜色?虽然很难将一张切片与另一张切片进行比较,但在一张切片中,颜色的差异会使异型增生或炎症区域显得更加明显,呈黑色或蓝色。另一方面,明亮的粉红色的岛状物可能提示深部角化,这是浸润的特征。
Architectural orderliness and polarity: Try to find a well-oriented fragment, not a tangential cut. In a benign, even reactive epithelium, all of the nuclei should appear to “know which way is up.”
结构规则和极性:试着找到切面方向良好的片段,而不是斜切面。在良性、甚至是反应性上皮中,所有的细胞核似乎都“知道向上的方向”
(译注:关于正确的切面。以切黄瓜为例,纵切得长条形,横切或垂直切面得圆形,沿切线方向或斜切得椭圆形或一块皮)
Mitotic figures: Although a few mitoses near the basal layer are acceptable, mitoses higher in the epithelium are not. As above, a well-oriented fragment is very helpful.
核分裂象:虽然基底层附近有少量核分裂是可以接受的,但上皮细胞中更高的部位出现核分裂不是正常现象。如上所述,观察切面方向良好的片段,非常有用。
(译注:关于核分裂象的位置。正常鳞状上皮基底层核分裂象,基底层上方2~3层细胞可以出现核分裂象)
Dyskeratotic cells: Small, intensely pink, shriveled round cells that have detached from their neighbors (Figure 4.2) can be a feature of dysplasia.
角化不良细胞:小的、深染粉红色的、皱缩的圆形细胞从邻近细胞分离(图4.2),可能是异型增生的一个特征。
Inflammation: Look for polymorphonuclear leukocytes (polys), plasma cells, and lymphocytes. Keep a high threshold for dysplasia in the setting of intense acute inflammation (polys).
炎症:寻找中性粒细胞、浆细胞和淋巴细胞。在剧烈急性炎症背景下,保持异型增生的高阈值(即,不要轻易诊断异型增生)。
Nuclei, eggs versus boulders (Figure 4.3): Reactive nuclei may enlarge but stay smooth and round to oval, and their chromatin condenses into several small nucleoli or speckles, like a bird’s egg. The chromatin may have an overall grey-blue look, and the nuclear membrane is often indistinct. Dysplastic or immature nuclei, however, appear to have too much chromatin. They are large and tend to be angulated with irregular nuclear membranes (like boulders), and the chromatin is uniformly dense and dark, almost like it was drawn with charcoal. Nuclear membranes may also appear thicker and more prominent.
核、蛋与大圆石(图4.3):反应性细胞核可能扩大,但保持轮廓光滑的圆形至椭圆形,其染色质浓缩成几个小碎核或斑点,如鸟蛋。染色质整体上呈灰蓝色,核膜通常不明显。然而,异型增生或未成熟的细胞核似乎有过多的染色质。核大,往往因不规则的核膜而成角(像是大圆石),染色质均匀致密,深染,几乎像是用木炭画出来的。核膜也可能显得更厚、更明显。
Nucleoli: Prominent nucleoli are actually a feature more suggestive of reactive changes than of dysplasia. A prominent nucleolus in a background of fine pale chromatin, in a smoothly rounded nucleus, is likely benign. Carcinomas usually do not acquire large dark nucleoli until they become invasive.
核仁:明显核仁实际上更提示反应性改变的特征,而不是异型增生。在平滑圆形的细胞核中,在细腻淡染的染色质背景中,明显核仁可能是良性的。在浸润之前,癌通常不会获得大的深染核仁。
Nuclear to cytoplasmic (N/C) ratios: The N/C ratio is normally high in the basal layer but should fall off as the cells mature. A high N/C ratio at the surface, especially in the setting of “boulder” nuclei, is very worrisome. This creates the impression of blueness at low power.
细胞核与细胞质(N/C)的比例:正常情况下,基底层N/C比高,但随着细胞成熟,N/C比应下降。表面的高N/C比,特别是在“大圆石”核的情况下,是非常令人担忧的。这会在低倍镜下产生蓝色的印象。
Invasion: Stromal invasion is a sure sign of cancer but is not always obvious. Pseudoepithe-liomatous hyperplasia and tangential sectioning are the main mimickers. Features that suggest true invasion include deep aberrant keratinization (pinking up) and single infiltrating cells with atypical nuclei (Figure 4.4). The basement membrane border should appear ragged and discontinuous in invasion. Well-differentiated squamous cell carcinoma can acquire prominent nuclei (usually not seen in CIS) and mimic reactive nuclei, but it should have the architectural features of invasion.
浸润:间质浸润是癌的必然迹象,但并不总是明显的。假上皮瘤样增生和斜向切片是主要的假冒现象。提示真正浸润的特征包括深部异常角化(变得更红)和单个浸润细胞伴异型性癌(图4.4)。基底膜边界在侵入时应呈现参差不齐和不连续。高分化鳞状细胞癌可以获得明显的细胞核(通常在CIS中不可见)和貌似反应性细胞核,但它应该具有浸润的结构特征。
Koilocytic (viral) changes, characterized by ballooned, cleared-out cells with enlarged, raisinoid nuclei, are present. Beware glycogenated normal cells, which are also ballooned but have small nuclei (Figure 4.8).
挖空细胞(病毒)改变,其特征为气球状、透明细胞和增大的葡萄干样核。小心糖原化正常细胞,它们也呈气球状,但核小(图4.8)。
The basal layer is disorganized, with mitoses in the lower one third of the epithelium.
基底层杂乱无序,核分裂象局限于上皮的下三分之一。
Condylomas have the same changes but a verrucous architecture.
尖锐湿疣也有同样的细胞学改变,但有疣状结构。
Undifferentiated, immature cells occupy > 50% of the epithelium (Figure 4.9).
未分化、未成熟细胞占据上皮的50%以上(图4.9)。
Mitoses occur above the lower one third of the epithelium.
核分裂发生在上皮的下三分之一的上方。
Overlying koilocytes or adjacent LSIL may be present.
可能存表层空泡细胞或相邻的LSIL。
Cells can be deceptively bland looking without prominent mitoses, but nuclei should still be enlarged with high N/C ratios.
细胞可能貌似温良,没有明显的核分裂,但核仍应增大、高N/C比。
Beware immature squamous metaplasia, which can look like HSIL at low power.
小心未成熟鳞状化生,在低倍镜下看似HSIL。
Increased number of cell layers (mainly in papillary lesions)
细胞层数量增加(主要在乳头状病变中)
Loss of polarity (loss of parallel arrays of nuclei)
失去极性(核不再平行排列)
Increased mitoses, above the basal layer
基底层以上核分裂增多
Enlarged, irregular, or hyperchromatic nuclei
核增大、不规则或深染
Discohesive cells or partially denuded epithelium
失黏附细胞或部分脱落的上皮
Loss of polarity of basal layer and maturation arrest (basal-type cells above the basal layer)
基底层失去极性和成熟停滞(基底层以上出现基底型细胞)
Dyskeratosis (abnormal keratinization), hyperkeratosis, and acanthosis
角化不良(异常角化)、角化过度和棘皮病
Increased mitoses and/or mitoses above the basal layer
核分裂增多和/或基底层以上核分裂
Cellular and nuclear pleomorphism (unlike at many other sites, dysplastic nuclei tend to show prominent nucleoli and nuclear membranes, almost like an invasive carcinoma; Figure 4.10)
细胞和核多形性(与许多其他部位不同,异型增生核往往显示显著的核仁和核膜,很像浸润性癌;图4.10)
Variable N/C ratios (in keratinizing dysplasia, there may be abundant pink cytoplasm)
N/C比可变(在角化性异型增生中,可能有丰富的粉红色细胞质)
Not necessarily full-thickness involvement, even in severe dysplasia
不一定全层受累,即使重度异型增生也是如此
They are lined with a nonkeratinizing squamous or intermediate epithelium, 5–30 cells thick, and may have a ciliated or mucous lining (Figure 4.11). Neutrophils are common.
它们被覆非角化鳞状上皮或中间上皮,5-30层细胞厚度,表面可能被覆纤毛细胞或粘液细胞(图4.11)。中性粒细胞很常见。
They may be fungiform (exophytic, septal) or inverted (inward growing).
它们可能是蕈状(外生,有间隔)或内翻(向内生长)。
They should have only mild atypia, orderly cells, and few mitoses.
它们应该只有轻微非典型性,细胞排列有序,只有极少核分裂。
点击进入免疫组化小程序