Cases reported "Calculi"

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1/5. Case of mediastinal seminoma with testicular microlithiasis.

    Testicular microlithiasis is a rare condition in which calcified concretions fill the lumina of the seminiferous tubules. We report the case of a 19-year-old Japanese man with mediastinal seminoma, normal testicular physical findings and bilateral testicular microlithiasis seen on ultrasonography. Testicular needle biopsy demonstrated multiple laminated calcifications within the seminiferous tubules without any signals of a viable germ cell tumor. To our knowledge, this is only the sixth reported case of extragonadal germ cell tumor with testicular microlithiasis.
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keywords = seminiferous tubule, tubule
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2/5. Ultrasonographic findings of testicular microlithiasis associated with intratubular germ cell neoplasia.

    Testicular microlithiasis is an uncommon condition in which calcified concretions fill the lumina of seminiferous tubules. We report the case of a twenty-three-year-old white man with a metastatic germ cell tumor and normal findings on testicular physical examination, but abnormal ultrasonography of the right testis. orchiectomy revealed intratubular germ cell neoplasia with testicular microlithiasis. Multiple circular echogenic foci on ultrasound correlated with the histologic finding of testicular microlithiasis. Further studies are indicated for assessing ultrasonography as an adjunct for screening the population at risk for intratubular germ cell neoplasia.
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keywords = seminiferous tubule, tubule
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3/5. Sonography of testicular microlithiasis.

    The sonographic appearance of testicular microlithiasis detected in a patient presenting with torsion is described. A "speckled" pattern of multiple, tiny bright echoes is produced by calcific concretions in the seminiferous tubules and seems to be characteristic of microlithiasis. Although this condition is not treatable, it should be recognized because it is often associated with extratesticular abnormalities and can obscure superimposed testicular disease.
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ranking = 0.5
keywords = seminiferous tubule, tubule
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4/5. Testicular microlithiasis in 2 children with bilateral cryptorchidism.

    Testicular microlithiasis, associated with bilateral cryptorchidism, is studied in 2, 6-year-old children. In case 1 autopsy revealed that 60 per cent of the seminiferous tubules contained completely calcified microliths. Similar mineralized concretions also were found in different areas of the cerebrum and cerebellum. In the testicular biopsy obtained from case 2, 30 per cent of the seminiferous tubules contained microliths showing different degrees of calcification. The study of such calcifications supports the hypothesis that the mineralization process occurs according to the following stages: 1) accumulation of cellular debris in the tubular lumen, 2) deposit of concentric rings of glycoprotein material surrounding the central core and 3) calcification of the glycoprotein lamellar material. The presence of similar concretion in the nervous system as well as the lung in other reported cases suggests that microlithiasis could be a systemic disease.
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ranking = 1
keywords = seminiferous tubule, tubule
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5/5. Diffuse testicular microlithiasis associated with intratubular germ cell neoplasia and seminoma.

    Testicular microlithiasis is an uncommon condition in which multiple calcifications develop in the seminiferous tubules. Sonography demonstrates a typical pattern of diffuse, hyperechoic specks. This condition has been associated with premalignant and malignant changes of the testicle. We present a case of intratubular germ cell neoplasia and a microscopic focus of seminoma found in a patient with isolated testicular microlithiasis and no focal mass. physicians should be more aware of testicular microlithiasis, and heightened surveillance is recommended to identify progression to tumor formation.
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ranking = 0.5
keywords = seminiferous tubule, tubule
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