Histogenesis and classification of diffuse and cystic uterine adenomyosis

Purpose: Recently, focal adenomyosis was classified into three subtypes according to magnetic resonance imaging findings: connected to the endometrium (subtype I), connected to the perimetrium (subtype II), and not connected to either the endometrium or the perimetrium (subtype III). However, diffuse adenomyosis and cystic adenomyosis have not been investigated. We attempted to classify diffuse-type adenomyosis and cystic-type adenomyosis according to magnetic resonance imaging findings and verified the validity of the previous classification of focal adenomyosis. Methods: A total of 1504 cases of adenomyosis (focal, n = 1093; nodular, n = 15; diffuse, n = 383; cystic, n = 13) shown in magnetic resonance imaging findings of patients who underwent conservative surgical treatment from 2002 to 2016 at our hospital were reviewed according to the criteria of Kishi. Results: Of the 383 patients with diffuse adenomyosis, 272 (70.8%) were classified as subtype I, while all cases of cystic-type adenomyosis developed in the lateral wall of the uterus were classified as subtype III. Conclusion: Our findings indicate that diffuse adenomyosis develops from the same mechanism as focal adenomyosis subtype I. In addition, we consider that subtype III has greater relationship with cystic adenomyosis than the other types.

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Interobserver reliability of the classification of capitellar osteochondritis dissecans using magnetic resonance imaging

Shoulder & Elbow ◽

10.1177/1758573218821151 ◽

2019 ◽

Vol 12 (4) ◽

pp. 284-293 ◽

Cited By ~ 1

Author(s):

Rens Bexkens ◽

F. Joseph Simeone ◽

Denise Eygendaal ◽

Michel PJ van den Bekerom ◽

Luke S Oh ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Osteochondritis Dissecans ◽

Interobserver Agreement ◽

Interobserver Reliability ◽

Lateral Wall ◽

Magnetic Resonance Images ◽

Resonance Imaging ◽

Instability Criteria

Aim (1) To determine the interobserver reliability of magnetic resonance classifications and lesion instability criteria for capitellar osteochondritis dissecans lesions and (2) to assess differences in reliability between subgroups. Methods Magnetic resonance images of 20 patients with capitellar osteochondritis dissecans were reviewed by 33 observers, 18 orthopaedic surgeons and 15 musculoskeletal radiologists. Observers were asked to classify the osteochondritis dissecans according to classifications developed by Hepple, Dipaola/Nelson, Itsubo, as well as to apply the lesion instability criteria of DeSmet/Kijowski and Satake. Interobserver agreement was calculated using the multirater kappa (k) coefficient. Results Interobserver agreement ranged from slight to fair: Hepple (k = 0.23); Dipaola/Nelson (k = 0.19); Itsubo (k = 0.18); DeSmet/Kijowksi (k = 0.16); Satake (k = 0.12). When classifications/instability criteria were dichotomized into either a stable or unstable osteochondritis dissecans, there was more agreement for Hepple (k = 0.52; p = .002), Dipaola/Nelson (k = 0.38; p = .015), DeSmet/Kijowski (k = 0.42; p = .001) and Satake (k = 0.41; p < .001). Overall, agreement was not associated with the number of years in practice or the number of osteochondritis dissecans cases encountered per year (p > .05). Conclusion One should be cautious when assigning grades using magnetic resonance classifications for capitellar osteochondritis dissecans. When making treatment decisions, one should rather use relatively simple distinctions (e.g. stable versus unstable osteochondritis dissecans; lateral wall intact versus not intact), as these are more reliable.

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Classification of Pilonidal Sinus Disease According to Physical Examination, Ultrasonography and Magnetic Resonance Imaging Findings

Turkish Journal of Colorectal Disease ◽

10.4274/tjcd.galenos.2020.2020-3-9 ◽

2020 ◽

Vol 30 (4) ◽

pp. 261-267

Author(s):

Yusuf Yavuz ◽

Mehmet Aykut Yıldırım ◽

Murat Çakır ◽

Alper Varman ◽

Ömer Karahan

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Physical Examination ◽

Pilonidal Sinus ◽

Pilonidal Sinus Disease ◽

Imaging Findings ◽

Resonance Imaging ◽

Sinus Disease

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Magnetic resonance imaging findings of disc-related epidural cysts in nonsurgical and postoperative microdiscectomy patients

Radiologia Brasileira ◽

10.1590/s0100-39842012000400005 ◽

2012 ◽

Vol 45 (4) ◽

pp. 205-209 ◽

Cited By ~ 5

Author(s):

Marcelo Novelino Simão ◽

Clyde A. Helms ◽

William J. Richardson

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

The Other ◽

Lumbar Surgery ◽

Imaging Findings ◽

Resonance Imaging ◽

History Of ◽

Spine Surgeon ◽

Epidural Cyst

OBJECTIVE: To demonstrate five discal cysts with detailed magnetic resonance imaging findings in nonsurgical and following postoperative microdiscectomy. MATERIALS AND METHODS: Five discal cysts in four patients who underwent magnetic resonance imaging were found through a search in our database and referral from a single orthopedic spine surgeon. Computed tomography in two cases and computed tomography discography in one case were also performed. RESULTS: Five discal cysts were present in four patients. Three patients had no history of previous lumbar surgery and the other patient presented with two discal cysts and recurrent symptoms after partial laminectomy and microdiscectomy. All were oval shaped and seated in the anterior epidural space. Four were ventrolateral, and the other one was centrally positioned in the anterior spinal canal. One showed continuity with the central disc following discography. Three were surgically removed. CONCLUSION: Magnetic resonance imaging can easily depict an epidural cyst and the diagnosis of a discal cyst should be raised when an homogeneous ventrolateral epidural cyst contiguous to a mild degenerated disc is identified.

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Two cases of primary leptomeningeal melanomatosis mimicking subacute meningitis

The Neuroradiology Journal ◽

10.1177/1971400917708581 ◽

2017 ◽

Vol 31 (1) ◽

pp. 42-46 ◽

Cited By ~ 3

Author(s):

Sabina Aslan ◽

Rahsan Gocmen ◽

Nazire Pınar Acar ◽

Farid Khasiyev ◽

Ekim Gumeler ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Cerebrospinal Fluid ◽

Magnetic Resonance ◽

The Other ◽

Imaging Findings ◽

Correct Interpretation ◽

Resonance Imaging ◽

Cerebrospinal Fluid Analysis ◽

Fluid Analysis ◽

Atypical Cells

Primary involvement of leptomeninges with melanocytic tumours is rarely seen and its diagnosis is challenging. Here we summarise two cases of primary leptomeningeal melanomatosis presenting as subacute meningitis. Both cases have pleocytosis and high protein on cerebrospinal fluid analysis, and demonstrated atypical cells on cytology. On magnetic resonance imaging, there is diffuse leptomeningal thickening and avid enhancement of intracranial and intraspinal leptomeninges. One of them demonstrates T1 shortening due to magnetic effects of melanin, the other case is amelanotic and shows hypointensity on precontrast T1-weighted images. Both cases can be diagnosed with biopsy. In conclusion, these cases highlight the importance of the correct interpretation of cytological and magnetic resonance imaging findings in patients with atypical findings.

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