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M Riquet

Publications and source records attributed to M Riquet.

At least 163 records · Page 9Linked to original sources
PubMed1989

Direct lymphatic drainage of lung segments to the mediastinal nodes. An anatomic study on 260 adults.

The subpleural lymphatics of 483 lung segments were injected in cadavers of 260 adult subjects. The injected lymph vessels corresponded to the pulmonary segmentation in 91% of the cases and remained close by in the other cases. Direct passages to the mediastinal nodes were observed in 54 of 243 right lung segments injected (22.2%) and 60 of 240 left lung segments (25%). Among a total of 114 direct passages observed, 99 remained superficial in the pleura, half of them composed of a single vessel. These passages have been observed more frequently in the segments of the upper lobes. Injections of basal segments in the right and left lower lobes showed fewer of these direct passages to the mediastinal lymph nodes and also demonstrated direct lymph vessels to lymph nodes located at the origin of the upper lobar bronchi. In two dissections of the right upper lobe, the drainage went directly to the right venous jugular-subclavian junction, and in three dissections from three right terminal basal segments the lymph vessel went directly to the thoracic duct in its mediastinal passage. Direct contralateral lymph pathways were observed five times, four of them from basal segments of lower lobes.

Adult↗
PubMed1988

[Peripheral subpleural intrapulmonary lymph nodes. Apropos of a clinical case and an anatomical case].

The authors report the case of a round, peripheral radiographic opacity ("coin lesion" of English-language authors) which after surgical excision was found to be an intrapulmonary lymph node. In an anatomical study on the lymphatic drainage of pulmonary segments in adults, a similar lesion was found among 483 injected segments. A review of the literature yielded 27 similar cases which are described in detail. These lymph nodes are probably more frequent than is generally believed, as shown by an experimental radiolymphographic study. Such clinical findings will no doubt be rendered more numerous by the improved sensitivity of new medical imaging techniques. Despite hypotheses put forward by the authors, the presence of these lymph nodes, which seem to be acquired by the adult lung, has not yet been explained.

Aged↗
PubMed1987

[Multiple leiomyomatous pulmonary nodules in women. Apropos of 2 cases of metastasizing benign leiomyoma].

Two cases of multiple pulmonary leiomyomas in women aged 51 and 45 years respectively are reported. The lesions were discovered 21 and 11 years respectively after hysterectomy for uterine fibromyoma without abnormal histological features. The pulmonary nodules were bilateral and either stable or growing slowly. They were revealed by non-specific symptoms. At surgical biopsy the histological picture was one of benign leiomyoma without mitosis. In one of the 2 patients a pulmonary nodule was explored for oestrogen and progesterone receptors with positive results. The various theories on the origin of these multiple leiomyomas are reviewed. Initially regarded as malformative tumours, they were later interpreted as metastases of uterine leiomyomas with a potential for dissemination. The finding of hormone receptors demonstrates a relationship between these pulmonary lesions, uterine leiomyomas and other multifocal leiomyomatous diseases, including lymphangioleiomyomatosis. The slow but benign course of these tumours differentiates them from metastases of low-malignancy leiomyosarcomas.

Female↗
PubMed1986

[Intertracheobronchial lymph nodes: lymph inflow and outflow in lung segments from 200 adult subjects].

Topographic anatomy of the intertracheobronchial lymp nodes has been thoroughly studies and is now well known. Cinetic aspects of the lymphatic flux passing through these lymph nodes is not completely understood. Supleural lymphatics of lung segments were injected in 200 adults. Almost 300 segments were then injected among the different lobes. The intertracheobronchial lymph node group was interested by the afferencies of 3 segments out of 5. It was injected only once out of 5 from the upper lobes but in 90 to 100% of segmental injections of the lower lobes. Nine times out of ten, the middle lobe was drained by this group, the lingula less than on time out of fife. In almost one third of the cases, the injection was localized to this group and without further progression. This phenomenon was more frequent in the injections of the left lung. The other times the injection continued toward the latero tracheal ascendent chains : right paratracheal chain and esophageal-tracheal, left recurrent chain (left latero or paratracheal). In one third of the cases, only one of these chain was interested and in one time out of two, the right paratracheal chain was concerned. The other times, the injection continued in 2 chains, occasionally three. If these findings are analyzed in regard to the side injected, a contralateral lymphatic drainage is observed either from the left or from the right side. Finally, in less than 10% of the cases, there was a drainage of this group towards the thoracic duct in the mediastinum. Scarcely, it was observed a descendant drainage pathway to the abdomen.

Adult↗
PubMed1986

[Autonomous intrathoracic goiter. Apropos of 2 new cases].

An autonomous intrathoracic goiter (AIG) is a thyroid gland formation located in the thorax or, more precisely, the mediastinum. It is not a metastasis of thyroid cancer, and it has no parenchymatous or vascular connections with the cervical thyroid gland. It is fed by thoracic vessels and is observed in the absence of previous thyroidectomy. Its multiple appellations, and the fact that clinical reports often lack precision and detail, complicate investigations concerning AIG, a rare variety of mediastinal goitre (slightly more than 100 cases published). AIG is essentially caused by an abnormal embryonic development of the thyroid gland. It must be distinguished from migratory goitres partially resected and forgotten in the thorax after cervicotomy. This fully mediastinal tumour is usually removed by the thoracic approach.

Adult↗
PubMed1986

[Filamentary granules in human bronchi].

Mucous cells of human bronchial glands contain secretory granules with 5,5-7 nm parallel filaments. In contrast with the glycoproteic-rich mucous granules, filamentary granules exhibit weak reactivity with tannic acid, indicative of proteins. Exocytosis or discharge in glandular lumen are sometimes observed. These original granules may probably represent an additional component of fibrillar matrix in mucus.

Bronchi↗
PubMed1986

[Lymphatic drainage of the pulmonary segments in the adult: clinical facts and anatomical confirmation].

Anatomical descriptions of the pulmonary lymphatics come mostly from data collected on the fetus or the newborn. Few studies refer to the respective drainage of the different segments, owing to their recent identification. However, the surgeon operating a lung must know whether a given region can drain directly into the mediastinal lymph nodes, and where exactly it drains. Clinical observations tend to favour this possibility. In fact, it is not rare that tumors considered as N.O., that is without any involvement of hilum lymph nodes recur in the mediastinum. In addition, the systematic excision of mediastinal lymphatic chains, being carried out by out surgical team for more than 2 years, has shown the presence of mediastinal nodes in a lot of tumors of this type. The anatomical study which started 8 months ago is presented here and fully confirm this theory. Il showed the presence of collectors leading directly to the mediastinal lymph nodes, the possibility of contra-lateral drainage and of ducts leading directly to the supra-clavicular regions.

Carcinoma, Bronchogenic↗
PubMed1985

[Traumatic rupture of the middle lobe bronchus and pulmonary artery: considerations apropos of a case].

The authors report the case of a road accident which resulted in rupture of the middle lobe bronchus. There was an associated lesion of the pulmonary artery. Treatment was conservative after primary evaluation of the right pulmonary artery at its origin. Vascular trauma associated with rupture of the main bronchi is rare. The prevalence is greater in the case of rupture of the more distal lobar bronchi. It is important to be aware of this possibility, and the pulmonary artery must be inspected before such lesions are treated surgically.

Accidents, Traffic↗