Brain tumours, embryonal tumours and teratomas Flashcards

1
Q

What are lymphomas

A

Neoplastic proliferations of lymphoid cells of various types

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2
Q

What are leukaemias

A

Neoplastic proliferations of the cells (mainly blood white cells and their precursors) of the haemopoietic bone marrow

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3
Q

What are the two types of lymphoma

A

Hodgkins disease

Non-Hodgkins lymphoma

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4
Q

What are the most common of the Non-Hodgkins lymphoma

A

Lymphocytic lymphomas

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5
Q

What are the clinical features of lymphomas

A
  • Most present clinically with lymphadenopathy (lymph node enlargement)
  • Hepatomegaly (infiltrated liver) and splenomegaly (infiltrated spleen) or bone marrow infiltration
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6
Q

What is the neoplastic cell in classical Hodgkins disease called

A

Reed-Sternberg cell

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7
Q

What are the other cells present in classical Hodgkin’s disease

A

Lymphocytes
Eosinophils
Fibroblasts

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8
Q

What are the different types of Hodgkin’s disease based on

A

Differing proportions of Reed-Sternberg cells and lymphocytes

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9
Q

What is Lymphocyte rich Hodgkins

A

Few R-S cells and lots of lymphocytes

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10
Q

What is Lymphocyte depleted Hodgkins

A

Lots of R-S cells and few lymphocytes

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11
Q

What is Mixed cellularity Hodgkins

A

Roughly equal proportions of R-S cells and lymphocytes

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12
Q

What is Nodular sclerosing Hodgkins

A

As mixed cellularity, but different architecture

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13
Q

Are high grade lymphomas good or bad

A

bad

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14
Q

What is a myeloma

A

A tumour of mature plasma cells

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15
Q

What us a myeloma presented with

A

Bone tumours
Osteolytic
Painful

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16
Q

What are the main effects of a lymphoma

A

replacement of lymph nodes and infiltration of other tissues

17
Q

What are the most common primary tumours of the brain derived from

A

Glial cells

18
Q

What are glial cells

A

Astrocytes
Oligodendrocytes
Ependymal cells

19
Q

What are the most common glial cells to give rise to a brain tumour

A

Astrocytomas

20
Q

What do astrocytomas not do

A

Metastasize

21
Q

What are embryonal tumours derived from

A

Embryonic remnants of primitive ‘blast’ tissue

22
Q

Key facts about embryonal tumours

A

Mainly in young children
Highly malignant
Spread early to lymphatics and veins

23
Q

What are embryonal tumours sensitive to

A

Chemotherapy so chemotherapy has revolutionised prognosis

24
Q

What is nephroblastoma

A

In kidney, most common

25
Q

What is neuroblastoma and what is it derived from

A

In adrenal gland

derived from primitive adrenal medullary precursors (neuroblasts)

26
Q

What are some other examples of embryonal tumours

A

Retinoblastoma
Medulloblastoma
Hepatoblastoma

27
Q

What are teratomas derived from

A

Primitive germ cells which retain the capacity to differentiate along all 3 primitive embryological lines

28
Q

What do teratomas contain

A

representatives of ectoderm, mesoderm and endoderm

29
Q

Where would teratomas mainly occur

A

Ovary and testis

30
Q

What is the prognosis of a teratoma of the ovary

A

Good

31
Q

Are teratomas of the ovary benign or malignant

A

benign

32
Q

What does a teratoma of the ovary contain

A

Keratin

33
Q

Is a teratoma of the testis malignant or benign

A

Malignant

34
Q

What are important in the management of teratomas of testis

A

Tumour markers