Angiomyofibroblastoma is an uncommon benign mesenchymal tumor. It occurs almost in the vulvovaginal area of women, but can also be observed in men.

The gross features of AMFB are well-circumscribed. Usually, most tumors grow slowly, and patients do not feel pain. It also has low tendency for local recurrence.

Microscopical examination shows abundant thin-walled blood vessels with hypocellular and hypercellular areas.

Although testicular cancer can be derived from any cell type found in the testicles, more than 95% of testicular cancers are germ cell tumors (GCTs). Most of the remaining 5% are sex cord-gonadal stromal tumours derived from Leydig cells or Sertoli cells. Correct diagnosis is necessary to ensure the most effective and appropriate treatment. To some extent, this can be done via blood tests for tumor markers, but definitive diagnosis requires examination of the histology of a specimen by a pathologist.

Most pathologists use the World Health Organization classification system for testicular tumors:

- Germ cell tumors

- "Precursor lesions"

- Intratubular germ cell neoplasia

- Unclassified type (carcinoma in situ)

- Specified types

- "Tumors of one histologic type (pure forms)"

- Seminoma

- Variant - Seminoma with syncytiotrophoblastic cells

- Spermatocytic seminoma

- Variant - spermatocytic seminoma with sarcoma

- Embryonal carcinoma

- Yolk sac tumor

- Trophoblastic tumors

- Choriocarcinoma

- Variant - monophasic choriocarcinoma

- Placental site trophoblastic tumour

- Cystic trophoblastic tumor

- Teratoma

- Variant - Dermoid cyst

- Variant - Epidermoid cyst

- Variant - Monodermal teratoma (Carcinoid, Primitive neuroectodermal tumor (PNET), Nephroblastoma-like tumor, others.

- Variant - Teratomic with somatic-type malignancy

- "Tumours of more than one histologic type (mixed forms)"

- Embryonal carcinoma and teratoma

- Teratoma and seminoma

- Choriocarcinoma and teratoma.embryonal carcinoma

- Others

- Sex cord/Gonadal stromal tumors

- Leydig cell tumor

- Sertoli cell tumor

- Lipid rich variant

- Scleriosing variant

- Large cell calcifying variant

- Intratubular sertoli cell neoplasia in Peutz-Jeghers syndrome

- Granulosa cell tumor

- Adult type

- Juvenile type

- Thecoma Fibroma Group

- Thecoma

- Fibroma

- Sex cord/gonadal stromal tumor - incompletely differentiated

- Sex cord/gonadal stromal tumor - mixed types

- Mixed Germ Cell and Sex Cord/Gonadal Stromal Tumors

- Gonadoblastoma

- Germ cell-sex cord/gonadal stromal tumor, unclassified

- Miscellaneous tumours of the testis

- Carcinoid

- Tumors of ovarian epithelial types

- Serous tumor of borderline malignancy

- Serous carcinoma

- Well differentiated endometrioid tumor

- Mucinous cystadenoma

- Mucinous cystadenocarcinoma

- Brenner tumor

- Nephroblastoma

- Paraganglioma

- Haematopoietic tumors

- Tumours of collecting ducts and rete

- Adenoma

- Carcinoma

- Tumors of the paratesticular structures

- Adenomatoid tumor

- Malignant and Benign Mesothelioma

- Adenocarcinoma of the epididymis

- Papillary cystadenoma of the epididymis

- Melanotic neuroectodermal tumor

- Desmoplastic small round cell tumor

- Mesenchymal tumors of the spermatic cord and testicular adnexae

- Lipoma

- Liposarcoma

- Rhabdomyosarcoma

- Aggressive angiomyxoma

- Angiomyofibroblastoma-like tumor (see Myxoma)

- Fibromatosis

- Fibroma

- Solitary fibrous tumor

- Others

- Secondary tumors of the testis

One of the first signs of testicular cancer is often a lump or swelling in the testes. The U.S. Preventive Services Task Force (USPSTF) recommends against routine screening for testicular cancer in asymptomatic adolescent and adults including routine testicular self-exams. However, the American Cancer Society suggests that some men should examine their testicles monthly, especially if they have a family history of cancer, and the American Urological Association recommends monthly testicular self-examinations for all young men.

Symptoms may also include one or more of the following:

- a lump in one testis which may or may not be painful

- sharp pain or a dull ache in the lower abdomen or scrotum

- a feeling often described as "heaviness" in the scrotum

- breast enlargement (gynecomastia) from hormonal effects of β-hCG

- low back pain (lumbago) due to the cancer spreading to the lymph nodes along the back

It is not very common for testicular cancer to spread to other organs, apart from the lungs. If it has, however, the following symptoms may be present:

- shortness of breath (dyspnea), cough or coughing up blood (hemoptysis) from metastatic spread to the lungs

- a lump in the neck due to metastases to the lymph nodes

Testicular cancer, cryptorchidism, hypospadias, and poor semen quality make up the syndrome known as testicular dysgenesis syndrome.