Transcortical transcatheter ultrasound-assisted technique for deep-seated brain tumors. Technical note.

Purpose: Surgery of deep-seated brain tumors can be challenging. Several methods have been described to facilitate transcortical approaches, including ultrasound-assisted resection. Ultrasound-guided placement of a standard ventricular catheter is a widely reported technique and has been used to approach these lesions via the transcortical route.

The Contribution of Mediastinal Transbronchial Nodal Cryobiopsy to Morpho-Histological and Molecular Diagnosis.

(1) Background: endobronchial ultrasound-guided mediastinal transbronchial cryo-node biopsy, previously assisted by fine-needle aspiration, is a novel technique of particular interest in the field of lung cancer diagnosis and is of great utility for extrathoracic tumor metastases, lymphomas, and granulomatous diseases. An integrated histological and molecular diagnosis of small samples implies additional difficulty for the pathologist. Additionally, emerging tumor biomarkers create the need to search for new approaches to better manage the tissue sample; (2) Methods: An analytical observational study of 32 mediastinal node cryobiopsies is carried out in 27 patients ( = 27).

A case report of hepatic angiomyolipoma, inflammatory subtype. Clinico-pathological characterization: a diagnostic challenge.

Background: Angiomyolipoma is a benign mesenchymal neoplasm of a wide histological heterogeneity belonging to the PEComa "family." The liver, after the kidney, is their second most frequent location. However, inflammatory hepatic AMLs constitute a rare entity, with only fourteen documented cases until 2020.

Epithelioid angiomyolipoma of the liver: an incidental diagnosis.

We present the exceptional case of a 76-year-old woman with an incidental finding of a liver tumor compatible with an epithelioid angiomyolipoma, a rare neoformation about which there is still controversy regarding its management, due to its presumed potential for malignancy.

Giant cystic hepatocarcinoma in the absence of cirrhosis.

The diagnosis of hepatocellular carcinoma (HCC) became easier in relation to the improved radiological examinations; however, the neoplasm may occur under atypical presentations mimicking other benign or malignant processes. Several mechanisms for the cystic changes of HCC have been suggested, including arterial thrombosis, inflammation, and rapid tumor growth. This paper reports an uncommon case of a 74-year-old patient, who presented with pain in the upper right abdomen and large cystic mass involving right lobe of the liver.

Mature filum terminale teratoma. Excision guided by direct stimulation of nerve roots.

A 45-year-old male patient, with no history of interest, consulted in emergency department due to a progressive loss of strength in the lower limbs at the distal level with impossibility for dorsal flexion of the left foot, as well as neurogenic bladder. The MRI revealed a mass at the filum terminale with completed occupation of transverse diameter of the dural sac. The radiological diagnosis was lipoma of filum terminale.

Different radioinducid tumors synchrony in an acute lymphoblastic leukemia survivor.

The cranial radiation-induced tumors appearance in pediatric patients treated for hematological diseases such as leukemia/T-lymphoblastic lymphoma (T-ALL/LBL) is a known phenomenon that may include lesions of different malignant degrees and require neurosurgical treatment. We present the case of a 38-year-old man referred to our department for a sudden diplopia with 6-month progressive left hemiparesis and frequent falls. After imaging tests, different intra and extraxial lesions with different radiological behavior were observed, performing a single surgical approach for their resection.

[Perianal dermatofibrosarcoma protuberans: a case report, review and update].

Dermatofibrosarcoma protuberans is a low-grade sarcoma typically originating in the dermis but with local invasion of subcutaneous cell and muscle tissue. We report a case of perianal dermatofibrosarcoma protuberans in a 41-year-old male complaining of anal pain and constipation. To date, only two cases of perianal dermatofibrosarcoma protuberans have been reported.

[Chondroma adjacent to Meckel's cave mimicking a fifth cranial nerve neurinoma. A case report].

Cranial chondromas are tumours arising from chondrocyte embryonic remnants cells that usually appear in the skull base synchondrosis. In contrast to the rest of the organism, where chondroid tumours are the most common primary bone tumour just behind the haematopoietic lineage ones, they are a rarity at cranial level, with an incidence of less than 1% of intracranial tumours. The case is reported on a 42 year-old male referred to our clinic due to the finding of an extra-axial lesion located close to the Meckel's cave region, with extension to the posterior fossa and brainstem compression after progressive paraparesis of 6 months onset.

[Adenocarcinoma of the anal canal. Narrative review].

Adenocarcinoma (ADC) of the anal canal is a rare disease comprising only 5% of all anorectal neoplasias and 1.5% of all gastrointestinal tumours. The World Health Organisation classifies anal ADC into 3 types: the first may arise from the mucosa of the transitional zone in the upper canal, the second from the anal glands (ducts) and the last can develop in the environment of a chronic anorectal fistula.