ASSESSMENT Light microscopy

ASSESSMENT Light microscopy

Most tissue assessment depends on conventional light micros - copy . Microscopes have several lenses with various powers of magnification, typically ranging from × 20 to × 400 or more. A low-power lens allows scanning of a sample and assessment hile a higher power lens allows a of overall architecture, w closer view with more detail ( Figure 11.21 ). Attachment of one or more teaching arms, a camera and other accessories are possible for many microscopes ( Figure 11.8 ). Polarisation assists with detection of some types of foreign material (e.g. sutures) or to assess a special stain (e.g. Congo red for amyloid deposition).

(b) Figure 11.21 (a) Low-power view of an umbilical nodule. Glands are distributed irregularly through the tissue. (b) High-power view shows benign columnar epithelium lining the glands (arrow), indicating endo metriosis rather than carcinoma.

ASSESSMENT Light microscopy

Most tissue assessment depends on conventional light micros - copy . Microscopes have several lenses with various powers of magnification, typically ranging from × 20 to × 400 or more. A low-power lens allows scanning of a sample and assessment hile a higher power lens allows a of overall architecture, w closer view with more detail ( Figure 11.21 ). Attachment of one or more teaching arms, a camera and other accessories are possible for many microscopes ( Figure 11.8 ). Polarisation assists with detection of some types of foreign material (e.g. sutures) or to assess a special stain (e.g. Congo red for amyloid deposition).

(b) Figure 11.21 (a) Low-power view of an umbilical nodule. Glands are distributed irregularly through the tissue. (b) High-power view shows benign columnar epithelium lining the glands (arrow), indicating endo metriosis rather than carcinoma.

ASSESSMENT Light microscopy

Most tissue assessment depends on conventional light micros - copy . Microscopes have several lenses with various powers of magnification, typically ranging from × 20 to × 400 or more. A low-power lens allows scanning of a sample and assessment hile a higher power lens allows a of overall architecture, w closer view with more detail ( Figure 11.21 ). Attachment of one or more teaching arms, a camera and other accessories are possible for many microscopes ( Figure 11.8 ). Polarisation assists with detection of some types of foreign material (e.g. sutures) or to assess a special stain (e.g. Congo red for amyloid deposition).

(b) Figure 11.21 (a) Low-power view of an umbilical nodule. Glands are distributed irregularly through the tissue. (b) High-power view shows benign columnar epithelium lining the glands (arrow), indicating endo metriosis rather than carcinoma.