Items tagged “rare”

15 results
Case

Acinic cell carcinoma of the lacrimal gland

  Diagnosis certain
Frank Gaillard
Published 22 Apr 2010
86% complete
CT
Article

Primary prostatic malignant melanoma

Primary melanoma of the prostate is rare, and usually cannot be diagnosed on imaging alone. In many cases, it is believed that in fact, the tumor represents prostatic involvement by melanoma of the urethra. Epidemiology Primary malignant melanoma of the prostate represents both a tiny fraction...
Article

Primary urethral malignant melanoma

Melanoma of the urethra is a very rare tumor of the male urethra and often presents as an invasive prostatic mass. As such it is usually referred to as primary prostatic malignant melanoma.
Article

Prostate sarcoma

Prostate sarcomas are an uncommon and heterogeneous group of tumors arising from mesenchymal cells in and around the prostate (as opposed to the more common prostate adenocarcinoma which derives from the glandular tissue).  Pathology In children, the most common tumor type is a prostatic rhabd...
Case

Anteromedial meniscofemoral ligament (of the medial meniscus)

  Diagnosis certain
Matt Skalski
Published 06 Nov 2015
89% complete
MRI
Article

Ossifying renal tumor of infancy

Ossifying renal tumor of infancy (ORTI) is a rare renal tumor. Epidemiology extremely rare, <<1% of pediatric renal neoplasms (17 cases reported) 6 days - 3 months male predominant Pathology Histology reveals spindle cells and osteoblastic cells in a calcified osteoid matrix. It is thought...
Case

Birt-Hogg-Dubé syndrome

  Diagnosis certain
Miranda Siemienowicz
Published 05 Apr 2016
83% complete
CT
Case

Uterine torsion

  Diagnosis certain
Mahmoud Yacout Alabd
Published 12 Apr 2016
86% complete
Photo CT
Case

Insulinoma

  Diagnosis probable
Mustafa Hammad
Published 06 Dec 2016
70% complete
MRI CT
Article

Secretan disease

Secretan disease refers to rare situation of post-traumatic firm edema of the dorsum of the hand. The diagnosis can be considered in the setting of remote trauma and a fibrotic plaque-like lesion involving both the subcutaneous and tendinous spaces. Radiographic features MRI Signal characteri...
Case

Hepatic segmental torsion

  Diagnosis certain
Eric F Greif
Published 30 Jun 2017
92% complete
CT Annotated image
Case

Tracheobronchial papillomatosis with lung involvement

  Diagnosis certain
Brian Gilcrease-Garcia
Published 19 Feb 2018
87% complete
CT Photo X-ray
Article

Robust rheumatoid arthritis

Robust rheumatoid arthritis, also known as arthritis robust or rheumatoid robustus, refers to a rare variant of rheumatoid arthritis with marked subchondral cysts (geodes) and preserved bone density 1,2. Patients remain in good health usually with few - or even no - symptoms, hence the epithet "...
Article

12q14 microdeletion syndrome

12q14 microdeletion syndrome or osteopoikilosis-short stature-intellectual disability syndrome is caused by heterozygous deletion at the region of 12q14. The microdeletion affects the LEMD3 gene which has already been implicated in osteopoikilosis. Epidemiology Prevalence is <1 in 1 million li...
Article

Gardner-Silengo-Wachtel syndrome

Gardner-Silengo-Wachtel syndrome, also known as genito-palato-cardiac syndrome, is a rare male (46XY) gonadal dysgenesis condition that is assumed to be either an X-linked recessive or an autosomal recessive disorder 1. Epidemiology The estimated incidence is at <1 in 1,000,000 live births. P...

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