Acta Radiológica Portuguesa

Angiomatoid Fibrous Histiocytoma: A Rare Tumor and a Diagnostic Challenge

Ana Luísa Pinto — 2025-05-12

Angiomatoid Fibrous Histiocytoma (AFH) is a rare soft tissue neoplasm that often presents in the subcutaneous or deep dermis of the extremities of children and young adults and is classified according to the WHO Classification of Soft Tissue Tumors 2020 as "intermediate tumor of uncertain differentiation". Diagnosing this condition is challenging for radiologists and pathologists because of its nonspecific and heterogeneous imaging and histopathologic features.

The authors present a case of a 13-year-old girl with a slow-growing palpable lump in the right thigh, painless, tender, and nonmobile, that on MRI was well-defined, with pseudocapsule and lobulated contours, with fluid-fluid levels with hemorrhagic content and a solid enhancing nodule. Due to the nonspecific imaging features favorable to a malignant lesion, a percutaneous biopsy was performed, and the result was inconclusive. The final diagnosis of AFH was made after surgical excision of the lesion.

Pelvic Solitary Fibrous Tumor: A Case Report and Review of the Literature

Rita Cartucho — 2025-05-12

Nowadays, routine pelvic imaging in female patients, primarily conducted through ultrasound, is a commonly used method to search for uterine and adnexal abnormalities. Occasionally, during these examinations, non-gynecologic findings may be identified. Even with more advanced techniques, such as magnetic resonance imaging, determining the exact diagnosis may be challenging. In this article, by presenting a clinical case, we focus our attention on a solitary fibrous tumor of the pelvis, a lesion that, although rare, should be considered in the differential diagnosis of pelvic asymptomatic lesions that may resemble ovarian and uterine tumors.

X-Ray N.D.T. & Taxidermy: Two Examples of Analysis about Construction, Conservation and Repair

Carlos Silva Prates — 2025-05-12

Divergences between Portuguese and European Legislation on Radiological Protection of Pregnant and Lactating Women – Scientific Justification or Discrimination?

Celina Lourenço — 2025-05-12

The legislation currently in force in Portugal, relating to the legal framework for the promotion of safety and health of workers at work, completely prohibits pregnant workers and workers who have recently given birth or are breastfeeding, regardless of the exposure level, from carrying out activities in which they may be exposed to ionizing radiation, contrary to other national and international legislation. as well as current scientific evidence. In fact, European diplomas relating to the radiological protection of workers, as well as related national diplomas, don’t prevent the workers in question from continuing to work with ionizing radiation, despite paying special attention to the protection of the unborn child and requiring a rigorous risk analysis, with a clear definition of exposure limits.

This work aims to present a historical perspective of European and national regulations and investigate the origin of this misalignment, also considering other legislative approaches and international practices, and highlighting the need to address and clarify the issue in our country.

Extraskeletal Mesenchymal Chondrosarcoma of the Heart: a Rare Entity

Filipa Bento — 2025-05-12

Extraskeletal mesenchymal chondrosarcoma is an extremely rare neoplastic disease associated with high incidence of distant metastasis and poor prognosis, with heart metastasis being even more uncommon.

We present a case of a female patient, 62 years old, diagnosed with extraskeletal mesenchymal chondrosarcoma with disseminated metastatic disease for thirteen years, currently under second-line chemotherapy for three years. During her annual follow up with chest-abdominopelvic computed tomography (CT), an incidental heart metastasis was found, with no symptoms associated.

Key words: Chondrosarcoma; Mesenchymal; Heart.

Soft Tissue Swelling in an Infant: What is the Diagnosis?

Daniela Ester Brígido Santos Ribeiro — 2025-05-12

Caffey’s disease also known as Infantile Cortical Hyperostosis is a rare, self-limited disease, that usually appears between birth and 6-months-old. It can be inherited as an autosomal dominant trait. However, sporadic forms and incomplete penetrance have been reported. The diagnosis is made by the triad of soft tissue swelling and underlying cortical bone thickening (hyperostosis), systemic symptoms and the changes in the X-ray. Molecular genetic testing is also available. Treatment is symptomatic.
The authors describe one infant with the classical form of Caffey’s disease and its management.

Abdominal Pain in a Female Adolescent: A Diagnosis to Consider

Raquel Santos — 2025-05-12

OHVIRA syndrome is a rare congenital female anomaly, characterized by the triad: uterus didelphys, unilaterally obstructed hemivagina and ipsilateral renal agenesis. The authors present a case of a 12-year-old girl with cyclic abdominal pain, scarce catamenia and intense dysmenorrhea refractory to NSAIDs. An abdominal and pelvic computized tomography was carried out which revealed renal agenesis, duplication of the uterus, cervix, and vagina, and hematocolpos, suggesting vaginal obstruction. The prompt treatment allows a clear improvement in the clinical and reproductive prognosis, so the authors emphasize the importance of the knowledge and suspicion of this condition, allowing the diagnosis, referral, and early approach.

Fish Bone Perforation: A Rare Cause of Liver Abscess

Alberto Barbosa — 2025-05-12

Perforations of the gastrointestinal tract by foreign bodies are relatively infrequent, and several associated complications may arise, namely infectious complications at the site of the perforation, as well as in adjacent structures due to enteric content. Computed Tomography plays an essential role in these cases to evaluate complications, in most cases managing to identify the foreign body.

We present a rare case of a liver abscess caused by a perforation with a fishbone in a 72-year-old woman.

Hydatid Pulmonary Cyst Rupture: Diagnostic Challenges in a Non-Endemic Region

Bárbara Gaspar — 2025-05-12

In a non-endemic region like Portugal nowadays, a homeless migrant's case of a ruptured hydatid pulmonary cyst underscores the significance of imaging in diagnosing this condition. The article emphasizes the need for heightened awareness of imaging findings of this entity due to nonspecific symptoms.

Editorial: APRANEMN – O 3º pilar da Radiologia Nacional

Ângela Moreira — 2025-05-12

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ARP Case Report

Andreia Caetano Viegas — 2025-05-12

Clinical Case ARP N 32: Immune-Induced Pancreatitis and Cholangitis

Marta Vaz Dias — 2025-05-12