Pathology MICROSCOPIC - 2nd Semester Lab Exam

What is this?

What is this?

HEART:

Fibrinous Pericarditis: deposits of Fibrin on surface of pericardium

What is this?

HEART:

Rheumatic Myocarditis: Aschoff Nodules under vessel perivascular and Aschoff cells

What is this?

HEART:

Acute myocardial infarction: granulation tissue and PMNs, well delimitated, neformation vessels; about to organize phase

What is this?

HEART:

Acute Myocardial Infarction: structured & unsctructured necrosis (structured coagulation necrosis)

What is this?

HEART:

Sclerosis and Fibrosis: Old infarction/chronic

What is this?

ARTERY:

Atherosclerosis: cholesterol crystals and complicated by thrombosis

What is this?

LUNG:

Lung Infarction: Pulmonary hemorrhagic infarction with structured necrosis; reddish area = red infarction,

What is this?

LUNG:

Pulmonary Edema & Emphysema: liquid inside alveolar space; association with emphysema because interalveolar septa is disrupted

What is this?

LUNG:

Chronic emphysema and Atelectasis with disrupted and detached alveolar septa

What is this?

LUNG:

Lobar pneumonia: monomorphic aspect of alveoli and gray hepatisation with PMNs, fibrin network

What is this?

BRONCHIA:

Bronchopneumonia with polymorphic aspect of alveoli, filled with pus

What is this?

LUNG:

Intersititial pneumonia - thick septum, lymphocyte and plasma cell infiltrate inside interalveolar septa, smooth alveoli

What is this?

LUNG:

Pulmonary tuberculosis: Edema, tuberculous epitheioid granuloma with caseous necrosis and surrounded by lymphocytes; Langhans cells and epithelioid cells

What is this?

LUNG:

Pulmonary Tuberculosis + Bronchopneumonia: necrosis, inflammation and Langhans cells

What is this?

LUNG:

Pulmonary carcinoma: with well differentiated squamous cells and keratin pearls

What is this?

Non-specific chronic parotiditis with atrophic parotid glands; gland disrupted by bands of fibrous tissue and lymphocyte/plasmocyte infiltrates

What is this?

Chronic gastric ulcer: lack of substance that will go under muscularis mucosa

Layers of Ulcer:

• 1st layer - Fibrinoid necrosis

• 2nd layer - inflammatory cells

• Granulomatous tissue layer between

What is this?

STOMACH:

Diffused Gastric Cancer: Signet cell carcinoma (mucinous carcinoma)

What is this?

INTESTINE:

Enteritis: ulcerative and necrotic type with inflammation

What is this?

INTESTINE:

Colon adenomatous polyps - simple epithelial benign tumor

What is this?

COLON:

Adenocarcinoma: Malignant epithelial tumor, moderately differentiated, crowded cells with small glands

What is this?

LIVER:

Liver cirrhosis: lots of fibrosis with regenerative nodules surrounded by sclerotic tissue and hyperplasia of biliary canaliculi; steatosis

What is this?

LIVER:

Hepatic abscess; well circumscribed area of liquefaction necrosis + PMNs; pyogenic capsule

What is this?

PANCREAS:

Cytosteatonecrosis: acute hemorrhagic pancreatitis, ulcero-necrotic pancreatitis; necrosis of pancreatic tissue, fatty tissue and acini

What is this?

KIDNEY:

Acute diffused glomerulonephritis: Streptococcus infection, hypercellularity of glomeruli

What is this?

KIDNEY:

Pyelonephritis = Microabscess, similar to abscess in liver

What is this?

KIDNEY:

Chronic Pyelonephritis: Tubules are dilated → contain hyaline cylinders; glomeruli hyalinized due to scelrosis - centripetal type of sclerosis from periphery to center of glomeruli. Pseudothyroidization of aspect of renal parenchyma

What is this?

KIDNEY:

Grawitz tumor (renal cell carcinoma):

• at periphery - atrophy of parenchyma due to compression of growing tumor

• Grawitz tumor = Clear cell carcinoma = Hypernephroma

• we can see aspect of clear cells because cells contain lipids and glycogen

What is this?

BREAST(Mammary glands):

Mammary carcinoma: has invasive ductal carcinoma with fibrous stroma and trabecular and insular aspect

What is this?

BREAST (Mammary gland):

• Fibrocystic mastosis

• Dilated ducts

• Glandular and mesenchymal hyperplasia

• Apocrine metaplasia = ducts lined by follicular epithelium

• Inflammatory cells

What is this?

UTERUS:

Leiomyoma of endometrium = acute mesenchymal tumor, rising up from smooth muscle.

• Pseudocapsule of tumoral growth due to compression

• Styrofoam aspect of smooth muscle with nuclei which are elongated with rounded ends

• Hyaline tissue

What is this?

PROSTATE:

Prostatic adenocarcinoma: Grade 3/4, epithelial malignant tumor

What is this?

PROSTATE:

Benign Nodular Hyperplasia: fibrosis, muscular hyperplasia - dilated ducts with fern leaf aspect and some with sympexions

What is this?

TESTIS:

Seminoma = Malignant tumor of testicle rising from germ cells, clear cytoplasm + monomorphic, island of tubular cells separated by fibrostroma infiltrated with lymphocytes.

What is this?

THYROID:

Basedow-Graves: TOXIC goiters

• follicles lined by columnar epithelium contain small amounts of colloid

What is this?

THYROID:

Non-toxic goiter, diffused = anisophilicular type of gout; thyroid follicle dilated and full of colloid, lined up by cubic epithelium

What is this?

THYROID:

Thyroid papillary carcinoma: epithelial malignant tumor; macrocalcification of thyroid = psammoma bodies, lethal Annie’s orphan eye nuclei - large and clear nuclei and intranuclear inclusions