title: Mesenchymal Extratesticular Tumors and Tumorlike Conditions: From the Radiologic Pathology Archives.
abstract: Both benign and malignant tumors and tumorlike conditions can arise from the nonepididymal extratesticular tissues. Benign tumors are far more common than malignant tumors, with lipoma being the most common lesion found at this site. Several imaging features can help narrow the differential diagnosis of these lesions, including the presence of fat and imaging features suggestive of fibrous tissue. Lesions that contain fat represent lipoma, liposarcoma, or angiomyofibroblastoma (AMF)-like tumor. If enhancing soft tissue is present in conjunction with fat, the differential diagnosis narrows further to just liposarcoma and AMF-like tumor. Lesions that display magnetic resonance imaging characteristics compatible with fibrous tissue are likely to be fibrous pseudotumor. However, many of the lesions in this location have overlapping imaging findings, and surgical excision is most often necessary for accurate diagnosis. The ability to narrow the differential diagnosis with imaging, however, is helpful for the clinician for both treatment planning and patient counseling.
authors.affiliation: From the American Institute for Radiologic Pathology, 1010 Wayne Ave, Suite 320, Silver Spring, MD 20910 (D.J.W., G.E.L.); Department of Radiology, Walter Reed National Military Medical Center, Bethesda, Md (D.J.W., J.M., C.F.G.); Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, Bethesda, Md (D.J.W., J.M., G.E.L.); and Joint Pathology Center, Silver Spring, Md (I.A.S.).
authors.forename: Darcy J
authors.initials: DJ
authors.lastname: Wolfman
authors.affiliation: From the American Institute for Radiologic Pathology, 1010 Wayne Ave, Suite 320, Silver Spring, MD 20910 (D.J.W., G.E.L.); Department of Radiology, Walter Reed National Military Medical Center, Bethesda, Md (D.J.W., J.M., C.F.G.); Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, Bethesda, Md (D.J.W., J.M., G.E.L.); and Joint Pathology Center, Silver Spring, Md (I.A.S.).
authors.forename: Jamie
authors.initials: J
authors.lastname: Marko
authors.affiliation: From the American Institute for Radiologic Pathology, 1010 Wayne Ave, Suite 320, Silver Spring, MD 20910 (D.J.W., G.E.L.); Department of Radiology, Walter Reed National Military Medical Center, Bethesda, Md (D.J.W., J.M., C.F.G.); Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, Bethesda, Md (D.J.W., J.M., G.E.L.); and Joint Pathology Center, Silver Spring, Md (I.A.S.).
authors.forename: C Frank
authors.initials: CF
authors.lastname: Gould
authors.affiliation: From the American Institute for Radiologic Pathology, 1010 Wayne Ave, Suite 320, Silver Spring, MD 20910 (D.J.W., G.E.L.); Department of Radiology, Walter Reed National Military Medical Center, Bethesda, Md (D.J.W., J.M., C.F.G.); Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, Bethesda, Md (D.J.W., J.M., G.E.L.); and Joint Pathology Center, Silver Spring, Md (I.A.S.).
authors.forename: Isabell A
authors.initials: IA
authors.lastname: Sesterhenn
authors.affiliation: From the American Institute for Radiologic Pathology, 1010 Wayne Ave, Suite 320, Silver Spring, MD 20910 (D.J.W., G.E.L.); Department of Radiology, Walter Reed National Military Medical Center, Bethesda, Md (D.J.W., J.M., C.F.G.); Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, Bethesda, Md (D.J.W., J.M., G.E.L.); and Joint Pathology Center, Silver Spring, Md (I.A.S.).
authors.forename: Grant E
authors.initials: GE
authors.lastname: Lattin
mesh_terms: D018322:Angiofibroma / Q000000981:diagnostic imaging; D000818:Animals; D002114:Calcinosis / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005834:Genital Neoplasms, Male / Q000000981:diagnostic imaging*; D051677:Histiocytoma, Malignant Fibrous / Q000000981:diagnostic imaging; D006801:Humans; D007889:Leiomyoma / Q000000981:diagnostic imaging; D007890:Leiomyosarcoma / Q000000981:diagnostic imaging; D008067:Lipoma / Q000000981:diagnostic imaging; D008080:Liposarcoma / Q000000981:diagnostic imaging; D008297:Male; D008648:Mesoderm; D011859:Radiography; D012611:Scrotum / Q000000981:diagnostic imaging; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*; D013085:Spermatic Cord / Q000000981:diagnostic imaging; D014463:Ultrasonography