[Agenesis of the coeliac trunk : A case report]

Vascular anatomical variants in general, and of the celiac trunk (TC) in particular, are rarely reported in the literature because they are generally asymptomatic and detected incidentally by imaging examinations performed for other causes. We report a case of agenesis of the celiac trunk, with separate birth of its three branches directly from the abdominal aorta, discovered fortuitously during a CT scan performed as part of the extension assessment of colon adenocarcinoma in a woman. initially asymptomatic.

[Aneurysm of the inferior vena cava : A case report]

Venous aneurysms in general, and of the inferior vena cava in particular (IVC), are rarely reported in the literature because they are generally asymptomatic and detected incidentally following complications such as thrombosis and pulmonary embolism, an Inferior vena cava (IVC) aneurysm is detected by imaging examinations performed for other causes. We report a case of IVC aneurysm classified as type I according to Gradman and Steinberg discovered incidentally during a follow-up CT scan in an asymptomatic woman followed for endometrial adenocarcinoma treated 6 years ago.

Analyse de la justification de l'irradiation médicale pédiatrique liée à la Tomodensitométrie (TDM) à Lomé (Togo)

OBJECTIVE

To evaluate the justification of medical irradiation related to CT scans performed in children in Lome.

MATERIALS AND METHODS

Descriptive cross-sectional study of CT scans performed from 1 September to 30 November 2019 in children aged 0 to 18 years. The analysis of the justification was made particularly on the formulation of the clinical indication, the consistency of the clinical indication with the requested CT and the conformity of the clinical indication with the Good Practice Guide (GPG) medical imaging examinations of the French Society of Radiology (SFR) and French Nuclear Medicine Society (SFMN).

RESULTS

The 175 CT scans included were dominated by cerebral CT (72.57%) followed by abdominal-pelvic CT (8%). Boys-dominated children (sex ratio=1.19) had an average age of 10.47+/-5.9. Prescribers composed of medical specialists (49.14%), general practitioner (31.43%) and paramedics (5%), requested in 21.14% of cases an imaging examination not or less irradiant before the CT. Clinical indication formulation was good in 70.86%, acceptable in 26.86%, and poor in 1.71%. This was consistent with the exam requested in 99.43% and conform with the GPG of the SFR in 48.57%. The more consistent the indications were with GPG, the more pathological the results were. Approximately 53% of the CT scans performed were not a priori justified.

CONCLUSION

Pediatric medical irradiation related to CT at Lome was in more than half of the cases a priori unjustified. Efforts must be made by practitioners to ensure that paediatric medical irradiation is judicious in Togo.

Un cas de COVID-19 compliqué d´embolie avec deux tests PCR initialement négatifs malgré des signes scanographiques

La maladie à coronavirus 2019 (COVID-19) déclarée en Chine en fin 2019 s´est rapidement généralisée aux autres continents. Son diagnostic se fait par test PCR (Polymerase Chain Reaction) sur des prélèvements naso-pharyngés. Ce test bien que spécifique est d´une sensibilité moindre comparé à la TDM thoracique. Nous rapportons le cas d´un patient testé négatif à deux reprises et chez qui la TDM retrouvait des signes typiques de COVID-19 et une embolie pulmonaire. Et ce n´est qu´après un troisième test PCR qu´il a été positif. Ce qui montre l´intérêt de répéter plusieurs fois les tests PCR mais également de considérer les signes scanographiques comme argument diagnostic devant induire une prise en charge adéquate.

MRI quantitation of abdominal skeletal muscle correlates with CT-based analysis: implications for sarcopenia measurement

Sarcopenia is associated with poor outcomes in a variety of conditions, including malignancy. Abdominal skeletal muscle area (SMA) segmentation using computed tomography (CT) has been shown to be an accurate surrogate for identifying sarcopenia. While magnetic resonance imaging (MRI) segmentation of SMA has been validated in cadaver limbs, few studies have validated abdominal SMA segmentation using MRI at lumbar level mid-L3. Our objective was to assess the reproducibility and concordance of CT and MRI segmentation analyses of SMA at mid-L3. This retrospective analysis included a random sample of 10 patients with renal cell carcinoma (RCC) and CT abdomen/pelvis, used to assess intra-observer variability of SMA measurements using CT. An additional sample of 9 patients with RCC and both CT and T2-weighted (T2w) MRI abdomen/pelvis was used to assess intra-observer variability of SMA using MRI and concordance of SMA between MRI and CT. SMA was segmented using Slice-O-Matic. SMA reproducibility was assessed using intraclass correlation coefficient (ICC). SMA concordance was analyzed using Bland-Altman plot and Pearson correlation coefficient. The intra-observer variability of CT and MRI SMA at mid-L3 was low, with ICC of 0.998 and 0.985, respectively. Bland-Altman analysis revealed bias of 0.74% for T2w MRI over CT. The Pearson correlation coefficient was 0.997 (p < 0.0001), demonstrating strong correlation between CT and T2w MRI. Abdominal SMA at mid-L3 is reproducibly segmented for both CT and T2w MRI, with strong correlation between the 2 modalities. T2w MRI can be used interchangeably with CT for assessment of SMA and sarcopenia. This finding has important clinical implications.

[Isolated sternal tuberculosis in immunocompétent adult]

Isolated sternal tuberculosis is a rarely described entity even in countries where tuberculosis is endemic. We report the case of 25 old years patient who presented with a chest wall mass. Imaging concluded to a (ring-enhancing hypodense soft tissue mass surrounding the sternum with sternal fracture). Malignancy was eliminated by a core needle biopsy. We noted clinical and radiological recovery with medical tuberculosis treatment. Neoplastic origin was removed by biopsy and anatomopathological study of the lesion.

[Osteosarcoma at a rare location: a case study]

Bone sarcomas are uncommon tumors (3 to 5% of all bone tumors), they are even more rare after an irradiation 0.5 at 2%. Mandibular location is barely described in the literature; it mainly affects adults in their thirties. We report the case of a 43 years old man with a painful right cheek mass evolving 7 years after the end of treatment for undifferentiated nasopharyngeal carcinoma. Medical imaging has enabled us to situate the lesion, guide us towards an etiology, and to the staging and to post therapeutic monitoring. Mandibular bone osteosarcoma is a rare malignant tumor in Morocco.