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Teratoma

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Mature teratoma - Benign cystic. Immature teratoma Malignant, Solid ... Rarely solid with mature tissues Benign. Cystic Teratoma. Dermoid Cyst: mamillae or ... – PowerPoint PPT presentation

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Title: Teratoma


1
Teratoma
  • Dr. Venkatesh M Shashidhar
  • Senior Lecturer in Pathology
  • Fiji School of Medicine

2
Germ cell Tumors
  • Dysgerminoma No differentiation
  • Yolksac tumor Extra-embryonic diff.
  • Choriocarcinoma Trophoblastic diff.
  • Embryonal Carcinoma Primitive diff.
  • Teratoma Somatic tissue differentiation

3
Teratoma
  • Most common Germ cell tumor
  • Majority are benign cystic reproductive age
  • Minority are solid malignant Prepuberty
  • Origin meiotic germ cell parthenogenesis

4
Teratoma Types
  • Mature teratoma - Benign cystic
  • Immature teratoma Malignant, Solid
  • Monodermal or Specialised single tissue

5
Mature Teratoma
  • Young reproductive age
  • Cystic
  • Benign
  • Ectodermal differentiation (Dermoid cysts)
  • About 1 - malignancy Squamous Ca.
  • Rarely solid with mature tissues Benign.

6
Cystic Teratoma
7
Dermoid Cyst
mamillae or Rokitansky's protuberances
8
Mature Cystic Teratoma
9
Cystic Teratoma
10
Mature Cystic Teratoma
11
Mature Cystic Teratoma
12
Dermoid Cyst
13
Immature Teratoma
  • Rare
  • Fetal or embryonic tissues
  • Prepubertal young adolescents
  • Large bulky tumors, solid
  • Areas of necrosis, hemorrhage
  • Embryonic tissue maturing to different tissues
    cartilage, bone, muscle, nerve etc.
  • Break capsule, spread, metastasis.

14
Immature Teratoma - Testes
15
Monodermal or specialized
  • Rare
  • Struma ovarii Thyroid - hyperthyroidism
  • Carcinoid Intestine - Carcinoid syndrome
  • Strumal carcinoid combination
  • Rarely malignant (lt2)

16
Dysgerminoma - Ovary
17
Dysgerminoma - Ovary
18
Normal Ovary
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